diff --git a/graphviz.spec b/graphviz.spec
index 6e897d3..4a1fb5d 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -29,7 +29,7 @@
 %define staticname %mklibname graphviz -d -s
 
 %if %{_use_internal_dependency_generator}
-%global __requires_exclude '/usr/bin/lua'
+%global __requires_exclude /usr/bin/lua
 %endif
 
 Summary:	Graph visualization tools