diff --git a/CMakeLists.txt b/CMakeLists.txt
index 47284fc..9dc3e68 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ execute_process(COMMAND bash "-c" "git rev-parse HEAD" OUTPUT_VARIABLE GIT_HASH
 execute_process(COMMAND bash "-c" "git tag -l --sort=refname 'v*' | tail -n1" OUTPUT_VARIABLE GIT_TAG OUTPUT_STRIP_TRAILING_WHITESPACE)
 execute_process(COMMAND bash "-c" "git rev-list -n 1 ${GIT_TAG}" OUTPUT_VARIABLE GIT_TAG_HASH OUTPUT_STRIP_TRAILING_WHITESPACE)
 string(SUBSTRING ${GIT_TAG} 1 -1 VERSION)
-if(NOT (${GIT_HASH} EQUAL ${GIT_TAG_HASH}))
+if(NOT ("${GIT_HASH}" EQUAL "${GIT_TAG_HASH}"))
   string(SUBSTRING ${GIT_HASH} 0 7 GIT_HASH_SHORT)
   set(VERSION "${VERSION}-${GIT_HASH_SHORT}")
 endif()