diff --git a/cmake/genrev.cmake b/cmake/genrev.cmake
index 669dab40ba6..b3fb4aade2a 100644
--- a/cmake/genrev.cmake
+++ b/cmake/genrev.cmake
@@ -62,7 +62,7 @@ if(NOT BUILDDIR)
 endif()
 
 # Create the actual revision.h file from the above params
-if(NOT ("${rev_id_cached}" MATCHES "${rev_id_str}"))
+if(NOT "${rev_id_cached}" MATCHES "${rev_id_str}")
   configure_file(
     "${CMAKE_SOURCE_DIR}/revision.h.in.cmake"
     "${BUILDDIR}/revision.h"