diff --git a/src/btstack_bool.h b/src/btstack_bool.h
index 89f2c88ff..5e1d398f6 100644
--- a/src/btstack_bool.h
+++ b/src/btstack_bool.h
@@ -57,6 +57,12 @@
 #  endif
 #endif /* __STDC__ */
 
+// Detecting C99 in Visual Studio requires to disable Microsoft Extensions (/Za) which causes other issues
+// Workaround: if MSC, assume stdbool.h exists, which is true for Visual Studio 2022
+#ifdef _MSC_VER
+#define PREDEF_STANDARD_C_1999
+#endif
+
 // define boolean type - required for MISRA-C 2012 Essential Type System
 #ifdef PREDEF_STANDARD_C_1999