diff --git a/libheif/bitstream.cc b/libheif/bitstream.cc
index 4e26c39c39..a79a5b7629 100644
--- a/libheif/bitstream.cc
+++ b/libheif/bitstream.cc
@@ -19,13 +19,12 @@
  */
 
 #include "bitstream.h"
-
 #include <utility>
 #include <cstring>
 #include <cassert>
 
-#define GCC_COMPILER (defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && !defined(__PGI))
-#if (defined(GCC_COMPILER) && __GNUC__ < 9) || (defined(__clang__) && __clang_major__ < 10)
+
+#if ((defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && !defined(__PGI)) && __GNUC__ < 9) || (defined(__clang__) && __clang_major__ < 10)
 #include <type_traits>
 #else
 #include <bit>