diff --git a/test/unit/tracing/common.hpp b/test/unit/tracing/common.hpp
index 395b33c..918c03e 100644
--- a/test/unit/tracing/common.hpp
+++ b/test/unit/tracing/common.hpp
@@ -1,12 +1,14 @@
 #ifndef TRACING_COMMON_HPP
 #define TRACING_COMMON_HPP
 
+template<typename...> using void_t = void;
+
 #ifndef CPPTRACE_BUILD_NO_SYMBOLS
 #define EXPECT_FILE(A, B) EXPECT_THAT((A), testing::EndsWith(B))
 #define EXPECT_LINE(A, B) EXPECT_EQ((A), (B))
 #else
-#define EXPECT_FILE(A, B)
-#define EXPECT_LINE(A, B)
+#define EXPECT_FILE(A, B) (void_t<decltype(A), decltype(B)>)0
+#define EXPECT_LINE(A, B) (void_t<decltype(A), decltype(B)>)0
 #endif
 
 #endif