diff --git a/jflex.spec b/jflex.spec
index c95817a..0f46abc 100644
--- a/jflex.spec
+++ b/jflex.spec
@@ -65,6 +65,8 @@ This package provides %{summary}.
 %pom_xpath_remove "pom:compilerId" parent.xml
 %pom_xpath_remove "pom:compilerArgs" parent.xml
 
+sed -i /%%inputstreamctor/d src/main/jflex/LexScan.flex
+
 %build
 java -jar $(find-jar java_cup) -parser LexParse -interface -destdir src/main/java src/main/cup/LexParse.cup
 jflex -d src/main/java/jflex --skel src/main/jflex/skeleton.nested src/main/jflex/LexScan.flex