diff --git a/gwp_asan/tests/backtrace.cpp b/gwp_asan/tests/backtrace.cpp
index 7a3427e..a4eb8eb 100644
--- a/gwp_asan/tests/backtrace.cpp
+++ b/gwp_asan/tests/backtrace.cpp
@@ -46,7 +46,7 @@
 }
 
 TEST_F(BacktraceGuardedPoolAllocatorDeathTest, UseAfterFree) {
-#ifdef __linux__ && __ARM_ARCH == 7
+#if defined(__linux__) && __ARM_ARCH == 7
   // Incomplete backtrace on Armv7 Linux
   GTEST_SKIP();
 #endif