diff --git a/src/defines/defines.mk b/src/defines/defines.mk
index 81bd6ed..ae539cd 100644
--- a/src/defines/defines.mk
+++ b/src/defines/defines.mk
@@ -71,7 +71,7 @@ PLATFORM = win32
 EXE = .exe
 OBJ = .o
 DEP = .d
-PYTHON =
+PYTHON = python
 
 else
 
@@ -107,7 +107,7 @@ VPATH=./ $(SHAREDIR)
 CD = cd
 CHMOD = chmod
 CP = cp
-DIFF = diff
+DIFF = diff -b
 GZIP = gzip -9c
 MKDIR = mkdir -p
 RM = rm -f
diff --git a/src/gpx/Makefile b/src/gpx/Makefile
index 7c5b463..42da2a5 100644
--- a/src/gpx/Makefile
+++ b/src/gpx/Makefile
@@ -31,14 +31,6 @@ test:: $(OBJDIR)/gpx$(EXE)
 	$(OBJDIR)/gpx$(EXE) -g -p -m r2x tests/lint.gcode $(OBJDIR)/lint-g.x3g > $(OBJDIR)/lint-g.log 2>&1
 	$(OBJDIR)/gpx$(EXE) -p -m r2x tests/issue13.gcode $(OBJDIR)/issue13.x3g > $(OBJDIR)/issue13.log 2>&1
 	$(OBJDIR)/gpx$(EXE) -g -p -m r2x tests/issue13.gcode $(OBJDIR)/issue13-g.x3g > $(OBJDIR)/issue13-g.log 2>&1
-	$(DIFF) tests/lint.x3g $(OBJDIR)/lint.x3g
-	$(DIFF) tests/lint.log $(OBJDIR)/lint.log
-	$(DIFF) tests/lint-g.x3g $(OBJDIR)/lint-g.x3g
-	$(DIFF) tests/lint-g.log $(OBJDIR)/lint-g.log
-	$(DIFF) tests/issue13.x3g $(OBJDIR)/issue13.x3g
-	$(DIFF) tests/issue13.log $(OBJDIR)/issue13.log
-	$(DIFF) tests/issue13-g.x3g $(OBJDIR)/issue13-g.x3g
-	$(DIFF) tests/issue13-g.log $(OBJDIR)/issue13-g.log
 	$(PYTHON) $(SRCDIR)/../scripts/s3g-decompiler.py $(OBJDIR)/lint.x3g > $(OBJDIR)/lint.txt 2>&1
 	$(PYTHON) $(SRCDIR)/../scripts/s3g-decompiler.py $(OBJDIR)/lint-g.x3g > $(OBJDIR)/lint-g.txt 2>&1
 	$(PYTHON) $(SRCDIR)/../scripts/s3g-decompiler.py $(OBJDIR)/issue13.x3g > $(OBJDIR)/issue13.txt 2>&1
@@ -47,6 +39,14 @@ test:: $(OBJDIR)/gpx$(EXE)
 	$(DIFF) tests/lint-g.txt $(OBJDIR)/lint-g.txt
 	$(DIFF) tests/issue13.txt $(OBJDIR)/issue13.txt
 	$(DIFF) tests/issue13-g.txt $(OBJDIR)/issue13-g.txt
+	$(DIFF) tests/lint.x3g $(OBJDIR)/lint.x3g
+	$(DIFF) tests/lint.log $(OBJDIR)/lint.log
+	$(DIFF) tests/lint-g.x3g $(OBJDIR)/lint-g.x3g
+	$(DIFF) tests/lint-g.log $(OBJDIR)/lint-g.log
+	$(DIFF) tests/issue13.x3g $(OBJDIR)/issue13.x3g
+	$(DIFF) tests/issue13.log $(OBJDIR)/issue13.log
+	$(DIFF) tests/issue13-g.x3g $(OBJDIR)/issue13-g.x3g
+	$(DIFF) tests/issue13-g.log $(OBJDIR)/issue13-g.log
 	-@$(RM) $(OBJDIR)/lint.x3g $(OBJDIR)/lint.txt $(OBJDIR)/lint.log
 	-@$(RM) $(OBJDIR)/lint-g.x3g $(OBJDIR)/lint-g.txt $(OBJDIR)/lint-g.log
 	-@$(RM) $(OBJDIR)/issue13.x3g $(OBJDIR)/issue13.txt $(OBJDIR)/issue13.log
diff --git a/src/gpx/gpx-main.c b/src/gpx/gpx-main.c
index 43de5e2..7187f39 100644
--- a/src/gpx/gpx-main.c
+++ b/src/gpx/gpx-main.c
@@ -314,6 +314,7 @@ int main(int argc, char * const argv[])
     char *eeprom = NULL;
     double filament_diameter = 0;
     char *buildname = "GPX " GPX_VERSION;
+    char *otherdelim = NULL;
     char *filename;
     int ini_loaded = 0;
     speed_t baud_rate = B115200;
@@ -642,6 +643,13 @@ int main(int argc, char * const argv[])
         }
         // assign build name
         buildname = strrchr(filename, PATH_DELIM);
+#ifdef _WIN32
+        char *otherdelim = strrchr(filename, '/');
+        if (otherdelim > buildname)
+        {
+            buildname = otherdelim;
+        }
+#endif
         if(buildname) {
             buildname++;
         }
@@ -656,6 +664,11 @@ int main(int argc, char * const argv[])
             filename = argv[0];
             // prefer output filename over input for the buildname
             char *s = strrchr(filename, PATH_DELIM);
+#ifdef _WIN32
+            otherdelim = strrchr(filename, '/');
+            if (otherdelim > s)
+                s = otherdelim;
+#endif
             s = strdup(s ? s+1 : filename);
             if (s)
                 buildname = s;