diff --git a/programs/build_helpers/cat-parts.cmake b/programs/build_helpers/cat-parts.cmake
index dd49fbaec2..bb85ca50cb 100644
--- a/programs/build_helpers/cat-parts.cmake
+++ b/programs/build_helpers/cat-parts.cmake
@@ -19,9 +19,9 @@ endforeach( HF )
 if( EXISTS ${HARDFORK_FILE} )
   file( READ ${HARDFORK_FILE} HFF )
 
-  if( ${HFF} STREQUAL ${HARDFORK_CONTENT} )
+  if( "${HFF}" STREQUAL "${HARDFORK_CONTENT}" )
     set( HARDFORK_REGENERATE FALSE )
-  endif( ${HFF} STREQUAL ${HARDFORK_CONTENT} )
+  endif( "${HFF}" STREQUAL "${HARDFORK_CONTENT}" )
 endif( EXISTS ${HARDFORK_FILE} )
 
 if( HARDFORK_REGENERATE )