diff --git a/src/google/protobuf/port_def.inc b/src/google/protobuf/port_def.inc
index 753d242d40e1d..f1c46c2a1b284 100644
--- a/src/google/protobuf/port_def.inc
+++ b/src/google/protobuf/port_def.inc
@@ -257,7 +257,7 @@
 #if __has_cpp_attribute(clang::musttail) && !defined(__arm__) && \
     !defined(_ARCH_PPC) && !defined(__wasm__) &&                 \
     !(defined(_MSC_VER) && defined(_M_IX86)) &&                  \
-    !(defined(__NDK_MAJOR__) && __NDK_MAJOR <= 24)
+    !(defined(__NDK_MAJOR__) && __NDK_MAJOR__ <= 24)
 #  ifndef PROTO2_OPENSOURCE
 // Compilation fails on ARM32: b/195943306
 // Compilation fails on powerpc64le: b/187985113