diff --git a/.github/workflows/CITest.yml b/.github/workflows/CITest.yml
index 9fc5a3ae6a..a9ae9230fc 100644
--- a/.github/workflows/CITest.yml
+++ b/.github/workflows/CITest.yml
@@ -24,6 +24,8 @@ concurrency:
 
 env:
   CI: true
+  UBSAN_OPTIONS: "halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1"
+  ASAN_OPTIONS: "halt_on_error=1:abort_on_error=1:print_summary=1:print_stacktrace=1"
 
 jobs:
   Linux:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e79bf7c3d0..345740c993 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -72,8 +72,8 @@ option(ENABLE_COVERAGE "Enable test coverage" OFF)
 if (ENABLE_ASAN)
     message("Enabling ASAN")
     add_definitions(-DASAN_ENABLED)
-    add_compile_options(-fsanitize=address)
-    add_link_options(-fsanitize=address)
+    add_compile_options(-fsanitize=address,undefined)
+    add_link_options(-fsanitize=address,undefined)
 endif()
 
 if (ENABLE_COVERAGE)
diff --git a/SStream.c b/SStream.c
index e561345d00..ce7ca35b3c 100644
--- a/SStream.c
+++ b/SStream.c
@@ -330,9 +330,6 @@ void printInt32(SStream *O, int32_t val)
 			SStream_concat(O, "%" PRId32, val);
 	} else {
 		if (val < -HEX_THRESHOLD) {
-			if (val == INT32_MIN)
-				SStream_concat(O, "-0x%" PRIx32, (uint32_t) INT32_MAX + 1);
-			else
 				SStream_concat(O, "-0x%" PRIx32, (int32_t)-val);
 		} else {
 			SStream_concat(O, "-%" PRIu32, (uint32_t)-val);