diff --git a/config/common.mk b/config/common.mk
index a4b9420..53b321a 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -274,7 +274,7 @@
 
 ifeq ($(CM_BUILDTYPE), UNOFFICIAL)
     ifneq ($(TARGET_UNOFFICIAL_BUILD_ID),)
-        CM_EXTRAVERSION := "-$(TARGET_UNOFFICIAL_BUILD_ID)"
+        CM_EXTRAVERSION := -$(TARGET_UNOFFICIAL_BUILD_ID)
     endif
 endif