diff --git a/Handbook/GNUmakefile b/Handbook/GNUmakefile
index c27cbdbe..9dce1de6 100644
--- a/Handbook/GNUmakefile
+++ b/Handbook/GNUmakefile
@@ -189,9 +189,9 @@ SG_BUILD_HOST	:=	$(shell hostname)
 SG_BUILD_TIME	:=	$(shell date '+%a %b %d, %Y %H:%M %Z %z')
 
 ifeq ($(strip $(SG_GIT_BRANCH)),dev)
-ifeq ($(strip $(SG_GIT_VERSION)),)
+ifeq ($(strip $(SG_GIT_TAG)),)
 SG_HANDBOOK_REVISION	:=	next
-endif # ($(strip $(SG_GIT_VERSION)),)
+endif # ($(strip $(SG_GIT_TAG)),)
 endif # ($(strip $(SG_GIT_BRANCH)),dev)
 
 SG_IS_GIT_BRANCH_HEAD_OR_MASTER := $(or $(filter HEAD,$(strip $(SG_GIT_BRANCH))),$(filter master,$(strip $(SG_GIT_BRANCH))))