diff --git a/React/CSSLayout/CSSLayout.c b/React/CSSLayout/CSSLayout.c
index e8e4d21cd..7c4e97d25 100644
--- a/React/CSSLayout/CSSLayout.c
+++ b/React/CSSLayout/CSSLayout.c
@@ -2497,17 +2497,3 @@ void CSSLog(CSSLogLevel level, const char *format, ...) {
   gLogger(level, format, args);
   va_end(args);
 }
-
-#ifdef CSS_ASSERT_FAIL_ENABLED
-static CSSAssertFailFunc gAssertFailFunc;
-
-void CSSAssertSetFailFunc(CSSAssertFailFunc func) {
-  gAssertFailFunc = func;
-}
-
-void CSSAssertFail(const char *message) {
-  if (gAssertFailFunc) {
-    (*gAssertFailFunc)(message);
-  }
-}
-#endif
diff --git a/React/CSSLayout/CSSLayout.h b/React/CSSLayout/CSSLayout.h
index 39f134f2f..fb06d6d45 100644
--- a/React/CSSLayout/CSSLayout.h
+++ b/React/CSSLayout/CSSLayout.h
@@ -132,10 +132,6 @@ typedef CSSSize (*CSSMeasureFunc)(CSSNodeRef node,
 typedef void (*CSSPrintFunc)(CSSNodeRef node);
 typedef int (*CSSLogger)(CSSLogLevel level, const char *format, va_list args);
 
-#ifdef CSS_ASSERT_FAIL_ENABLED
-typedef void (*CSSAssertFailFunc)(const char *message);
-#endif
-
 // CSSNode
 WIN_EXPORT CSSNodeRef CSSNodeNew(void);
 WIN_EXPORT void CSSNodeInit(const CSSNodeRef node);
@@ -242,10 +238,4 @@ CSS_NODE_LAYOUT_PROPERTY(CSSDirection, Direction);
 WIN_EXPORT void CSSLayoutSetLogger(CSSLogger logger);
 WIN_EXPORT void CSSLog(CSSLogLevel level, const char *message, ...);
 
-#ifdef CSS_ASSERT_FAIL_ENABLED
-// Assert
-WIN_EXPORT void CSSAssertSetFailFunc(CSSAssertFailFunc func);
-WIN_EXPORT void CSSAssertFail(const char *message);
-#endif
-
 CSS_EXTERN_C_END
diff --git a/React/CSSLayout/CSSMacros.h b/React/CSSLayout/CSSMacros.h
index 65e68964d..8d2375e57 100644
--- a/React/CSSLayout/CSSMacros.h
+++ b/React/CSSLayout/CSSMacros.h
@@ -33,16 +33,10 @@
 #define CSS_ABORT()
 #endif
 
-#if CSS_ASSERT_FAIL_ENABLED
-#define CSS_ERROR_FUNC(message) CSSAssertFail(message)
-#else
-#define CSS_ERROR_FUNC(message) CSSLog(CSSLogLevelError, "%s", message)
-#endif
-
 #ifndef CSS_ASSERT
-#define CSS_ASSERT(X, message) \
-  if (!(X)) {                  \
-    CSS_ERROR_FUNC(message);   \
-    CSS_ABORT();               \
+#define CSS_ASSERT(X, message)               \
+  if (!(X)) {                                \
+    CSSLog(CSSLogLevelError, "%s", message); \
+    CSS_ABORT();                             \
   }
 #endif