1 files changed, 1 insertions, 1 deletions
diff --git a/tools/test.h b/tools/test.h
index 4770a1e..74ace25 100644
--- a/tools/test.h
+++ b/tools/test.h
@@ -79,7 +79,7 @@
 
 #define TEST_FALSE(x, fmt...) {             \
     TEST_BASE(fmt);                         \
-    if(!x) { TEST_OK(#x" is false.") }      \
+    if(!(x)) { TEST_OK(#x" is false.") }    \
     else { TEST_FAIL(#x" is not false.") }  \
   }