diff --git a/Tools/GNUmakefile b/Tools/GNUmakefile
index c1bf7785b..33417f935 100644
--- a/Tools/GNUmakefile
+++ b/Tools/GNUmakefile
@@ -29,7 +29,7 @@ $(SOGO_SLAPD_SOCKD)_OBJC_FILES += \
 	\
 	SOGoSockD.m \
 	SOGoSockDScanner.m \
-	SOGoSockDOperation.m \
+	SOGoSockDOperation.m
 TOOL_NAME += $(SOGO_SLAPD_SOCKD)
 
 ###