diff --git a/config.c b/config.c
index df89c518..0dc7f279 100644
--- a/config.c
+++ b/config.c
@@ -1102,12 +1102,18 @@ LRESULT CALLBACK FindWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lPara
             }
             SetDlgItemText(page, IDC_GWLSTYLE, _itow(GetWindowLongPtr(window, GWL_STYLE), txt, 16));
             SetDlgItemText(page, IDC_GWLEXSTYLE, _itow(GetWindowLongPtr(window, GWL_EXSTYLE), txt, 16));
+            // WM_NCHITTEST messages info at current pt
             _itow(HitTestTimeout(nwindow, pt.x, pt.y), txt, 10);
             wchar_t tt[8];
             _itow(HitTestTimeout(window, pt.x, pt.y), tt, 10);
             wcscat(txt, L"/");wcscat(txt, tt);
             SetDlgItemText(page, IDC_NCHITTEST, txt);
+            // IDC_DWMCAPBUTTON
             RECT rc;
+            SetDlgItemText(page, IDC_DWMCAPBUTTON
+                , (GetCaptionButtonsRect(window, &rc) && PtInRect(&rc, pt))?L"Yes":L"No");
+
+            // Window rectangle info
             if (GetWindowRectL(window, &rc)) {
                 SetDlgItemText(page, IDC_RECT, RectToStr(&rc, txt));
             }
diff --git a/hooks.c b/hooks.c
index 223a6c02..e5aac7e4 100644
--- a/hooks.c
+++ b/hooks.c
@@ -356,7 +356,8 @@ static void SendSizeMove(DWORD msg)
 }
 /////////////////////////////////////////////////////////////////////////////
 // Overloading of the Hittest function to include a whitelist
-static int HitTestTimeoutblL(HWND hwnd, LPARAM lParam)
+// x and y are in screen coordinate.
+static int HitTestTimeoutbl(HWND hwnd, POINT pt)
 {
     DorQWORD area=0;
 
@@ -365,12 +366,23 @@ static int HitTestTimeoutblL(HWND hwnd, LPARAM lParam)
     if (blacklisted(ancestor, &BlkLst.MMBLower)) return 0;
     if (hwnd != ancestor
     && blacklisted(ancestor, &BlkLst.NCHittest)) {
-        SendMessageTimeout(ancestor, WM_NCHITTEST, 0, lParam, SMTO_NORMAL, 200, &area);
-        if(area == HTCAPTION) return HTCAPTION;
+        SendMessageTimeout(ancestor, WM_NCHITTEST, 0, MAKELPARAM(pt.x, pt.y), SMTO_NORMAL, 200, &area);
+        if(area == HTCAPTION) goto DOUBLECHECK_CAPTION;
     }
-    return HitTestTimeoutL(hwnd, lParam);
+    area = HitTestTimeoutL(hwnd, MAKELPARAM(pt.x, pt.y));
+    DOUBLECHECK_CAPTION:
+    if (area == HTCAPTION) {
+        // Double check that we are not inside one of the
+        // caption buttons buttons because of buggy Win10..
+        RECT buttonRc;
+        if (GetCaptionButtonsRect(ancestor, &buttonRc) && PtInRect(&buttonRc, pt)) {
+            // let us assume it is the minimize button, it makes no sence
+            // But Windows is too buggy
+            area = HTMINBUTTON;
+        }
+    }
+    return area;
 }
-#define HitTestTimeoutbl(hwnd, x, y) HitTestTimeoutblL(hwnd, MAKELPARAM(x, y))
 /////////////////////////////////////////////////////////////////////////////
 // Use NULL to restore old transparency.
 // Set to -1 to clear old state
@@ -3108,7 +3120,7 @@ static int InTitlebar(POINT pt, enum action action,  enum button button)
         // if (blacklisted(hwnd, &BlkLst.Windows)) return 0; // Next hook
 
         // Hittest to see if we are in a caption!
-        int area = HitTestTimeoutbl(nhwnd, pt.x, pt.y);
+        int area = HitTestTimeoutbl(nhwnd, pt);
         if (area == HTCAPTION || (button > BT_RMB && IsAreaAnyCap(area))) {
             return area;
         }
@@ -3497,7 +3509,7 @@ LRESULT CALLBACK TimerWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lPar
             if (IsSamePTT(&state.prevpt, &state.clickpt)
             &&  GetAsyncKeyState(1 + (buttonswaped = !!GetSystemMetrics(SM_SWAPBUTTON)))
             && (ptwnd = WindowFromPoint(state.prevpt))
-            &&!IsAreaLongClikcable(HitTestTimeoutbl(ptwnd, state.prevpt.x, state.prevpt.y))) {
+            &&!IsAreaLongClikcable(HitTestTimeoutbl(ptwnd, state.prevpt))) {
                 // Determine if we should actually move the Window by probing with AC_NONE
                 int ret = init_movement_and_actions(state.prevpt, AC_NONE, 0);
                 if (ret) { // Release mouse click if we have to move.
@@ -3754,7 +3766,7 @@ __declspec(dllexport) void Load(HWND mainhwnd)
 
     #pragma GCC diagnostic ignored "-Wpointer-sign"
     static const struct OptionListItem {
-        UCHAR *dest; wchar_t *section; char *name; int def;
+        UCHAR *const dest; const wchar_t *section; const char *name; const int def;
     } optlist[] = {
         // [General]
         {&conf.AutoFocus,       L"General", "AutoFocus", 0 },
@@ -3791,7 +3803,7 @@ __declspec(dllexport) void Load(HWND mainhwnd)
 
         // [Performance]
         {&conf.FullWin,         L"Performance", "FullWin", 2 },
-        {&conf.TransWinOpacity,   L"Performance", "TransWinOpacity", 0 },
+        {&conf.TransWinOpacity, L"Performance", "TransWinOpacity", 0 },
         {&conf.RefreshRate,     L"Performance", "RefreshRate", 0 },
         {&conf.RezTimer,        L"Performance", "RezTimer", 0 },
         {&conf.MoveRate,        L"Performance", "MoveRate", 2 },
@@ -3828,8 +3840,6 @@ __declspec(dllexport) void Load(HWND mainhwnd)
     conf.AVoff        = CLAMP(0, conf.AVoff,          100);
     conf.AeroSpeedTau = max(1, conf.AeroSpeedTau);
     conf.MinAlpha     = max(1, conf.MinAlpha);
-    if(conf.TransWinOpacity)
-        conf.TransWinOpacity = max(16, conf.TransWinOpacity);
     state.snap = conf.AutoSnap;
 
     // [Advanced] Max Speed
diff --git a/resource.h b/resource.h
index 5d23c73b..974b517c 100644
--- a/resource.h
+++ b/resource.h
@@ -162,3 +162,4 @@
 
 #define IDC_OUTTB                       2083
 #define IDC_UNIKEYHOLDMENU              2084
+#define IDC_DWMCAPBUTTON                2085
diff --git a/unfuck.h b/unfuck.h
index 5dca40cb..0cafde69 100644
--- a/unfuck.h
+++ b/unfuck.h
@@ -375,7 +375,7 @@ static void FixDWMRectLL(HWND hwnd, RECT *bbb, const int SnapGap)
         CopyRect(bbb, &frame);
     } else {
         SetRectEmpty(bbb);
-        //SetRect(bbb, 10, 10, 10, 10);
+        /*SetRect(bbb, 10, 10, 10, 10);*/
     }
     if (SnapGap) OffsetRect(bbb, -SnapGap, -SnapGap);
 }
@@ -413,6 +413,23 @@ static BOOL IsVisible(HWND hwnd)
 {
     return IsWindowVisible(hwnd) && !IsWindowCloaked(hwnd);
 }
+
+/* Use the DWM api to obtain the rectangel that *should* contain all
+ * caption buttons. This is usefull to ensure we are not in one of them. 
+ */
+static BOOL GetCaptionButtonsRect(HWND hwnd, RECT *rc)
+{
+    int ret = DwmGetWindowAttributeL(hwnd, DWMWA_CAPTION_BUTTON_BOUNDS, rc, sizeof(RECT));
+    /* Convert rectangle to to screen coordinate. */
+    if (ret == S_OK) {
+        RECT wrc;
+        GetWindowRect(hwnd, &wrc);
+        OffsetRect(rc, wrc.left, wrc.top);
+        return 1;
+    }
+    return 0;
+}
+
 static LONG NtSuspendProcessL(HANDLE ProcessHandle)
 {
     if (myNtSuspendProcess == IPTR) { /* First time */
diff --git a/window.rc b/window.rc
index d8f02954..2783f1d3 100644
--- a/window.rc
+++ b/window.rc
@@ -51,10 +51,12 @@ BEGIN
     EDITTEXT    IDC_GWLSTYLE,  160,165,50,12,ES_AUTOHSCROLL
 
     RTEXT       "WM_NCHITTEST:", 0, 10,182,60,8
-    EDITTEXT    IDC_NCHITTEST,  72,180,30,12,ES_AUTOHSCROLL
+    EDITTEXT    IDC_NCHITTEST,  72,180,25,12,ES_AUTOHSCROLL
+    RTEXT       "In DWM Buttons:", 0, 10,197,60,8
+    EDITTEXT    IDC_DWMCAPBUTTON,  72,195,25,12,ES_AUTOHSCROLL
     RTEXT       "EXSTYLE:", 0, 115,182,42,8
     EDITTEXT    IDC_GWLEXSTYLE,  160,180,50,12,ES_AUTOHSCROLL
-    RTEXT       "RECT:", 0, 97,197,25,8
+    LTEXT       "RECT:", 0, 102,197,22,8
     EDITTEXT    IDC_RECT,  125,195,85,12,ES_AUTOHSCROLL
 END