diff --git a/intern/cycles/util/util_types.h b/intern/cycles/util/util_types.h
index 7b7e04ca941..b98ee6faa8e 100644
--- a/intern/cycles/util/util_types.h
+++ b/intern/cycles/util/util_types.h
@@ -33,7 +33,7 @@
 
 #ifndef __KERNEL_GPU__
 
-#  ifndef NDEBUG
+#  ifdef NDEBUG
 #    define ccl_device static inline
 #  else
 #    define ccl_device static
@@ -45,7 +45,7 @@
 
 #if defined(_WIN32) && !defined(FREE_WINDOWS)
 
-#  ifndef NDEBUG
+#  ifdef NDEBUG
 #    define ccl_device_inline static __forceinline
 #  else
 #    define ccl_device_inline static
@@ -58,7 +58,7 @@
 #define ccl_try_align(...) /* not support for function arguments (error C2719) */
 #endif
 #define ccl_may_alias
-#  ifndef NDEBUG
+#  ifdef NDEBUG
 #    define ccl_always_inline __forceinline
 #  else
 #    define ccl_always_inline