diff --git a/CMakeLists.txt b/CMakeLists.txt
index a64ca73..a89c850 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ set(PROJECT_MINOR_VERSION 2)
 set(PROJECT_PATCH_VERSION 11)
 set(PROJECT_VERSION      ${PROJECT_MAJOR_VERSION}.${PROJECT_MINOR_VERSION}.${PROJECT_PATCH_VERSION})
 
-set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS} -DPROJECT_VERSION=\"${PROJECT_VERSION}\" -Wall")
+set(CMAKE_C_FLAGS         "${CMAKE_C_FLAGS} -DPROJECT_VERSION=${PROJECT_VERSION} -Wall")
 set(CMAKE_C_FLAGS_DEBUG   "${CMAKE_C_FLAGS_DEBUG} -O0 -ggdb3")
 
 SET(CMAKE_BUILD_TYPE Release CACHE STRING "default to Release")