diff --git a/CMakeLists.txt b/CMakeLists.txt
index c47c1674..365304a8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -126,7 +126,11 @@ if(GIT)
         COMMAND ${GIT} rev-parse --short HEAD
         OUTPUT_VARIABLE GIT_OUT OUTPUT_STRIP_TRAILING_WHITESPACE
         )
-    set(CPACK_PACKAGE_VERSION_PATCH "${CPACK_PACKAGE_VERSION_PATCH}-${GIT_OUT}")
+    if(GIT_OUT)
+        set(CPACK_PACKAGE_VERSION_PATCH "${CPACK_PACKAGE_VERSION_PATCH}-${GIT_OUT}")
+    else()
+        set(CPACK_PACKAGE_VERSION_PATCH "${CPACK_PACKAGE_VERSION_PATCH}")
+    endif()
 endif(GIT)
 
 set(CPACK_PACKAGE_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH})