diff --git a/include/zephyr/toolchain/gcc.h b/include/zephyr/toolchain/gcc.h
index 99da187f9e40f8..9af23fb219ea17 100644
--- a/include/zephyr/toolchain/gcc.h
+++ b/include/zephyr/toolchain/gcc.h
@@ -84,7 +84,7 @@
 #elif !defined(__cplusplus) && \
 	(((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6))) ||	\
 	 (__STDC_VERSION__) >= 201100)
-#define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
+#define BUILD_ASSERT(EXPR, MSG...) _Static_assert((EXPR), "" MSG)
 #else
 #define BUILD_ASSERT(EXPR, MSG...)
 #endif
diff --git a/include/zephyr/toolchain/mwdt.h b/include/zephyr/toolchain/mwdt.h
index 0da5e7bbee57aa..c4a142e4fb3b06 100644
--- a/include/zephyr/toolchain/mwdt.h
+++ b/include/zephyr/toolchain/mwdt.h
@@ -99,7 +99,7 @@
 /* For cpp98 */
 #define BUILD_ASSERT(EXPR, MSG...)
 #else
-#define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
+#define BUILD_ASSERT(EXPR, MSG...) _Static_assert((EXPR), "" MSG)
 #endif
 
 #define __builtin_arc_nop()	_nop()