diff --git a/src/ds/defines.h b/src/ds/defines.h
index 0237657..2638958 100644
--- a/src/ds/defines.h
+++ b/src/ds/defines.h
@@ -32,11 +32,12 @@
 
 namespace snmalloc
 {
+  // Forwards reference so that the platform can define how to handle errors.
   void error(const char* const str);
 } // namespace snmalloc
 
 #ifdef NDEBUG
-#  define SNMALLOC_ASSERT(expr) ((void 0))
+#  define SNMALLOC_ASSERT(expr) { }
 #else
 #  define SNMALLOC_ASSERT(expr) \
     { \
diff --git a/src/pal/pal_consts.h b/src/pal/pal_consts.h
index 3d2bb5f..a86feb5 100644
--- a/src/pal/pal_consts.h
+++ b/src/pal/pal_consts.h
@@ -116,4 +116,4 @@ namespace snmalloc
       }
     }
   };
-} // namespace snmalloc
\ No newline at end of file
+} // namespace snmalloc