diff --git a/return_disttag.sh b/return_disttag.sh
index e1b86aa..0e06cce 100755
--- a/return_disttag.sh
+++ b/return_disttag.sh
@@ -124,7 +124,7 @@ SPEC=$(cd SPECS; ls *.spec)
 mydist="XXXjsdf9ur7qlkasdh4gygXXX"
 test_nvr=$(build_with_dist_scl "SPECS/${SPEC}" ${mydist})
 
-test_nodist=$(echo ${test_nvr} | sed -e 's/-[a-zA-Z0-9.+]*$//')
+test_nodist=$(echo ${test_nvr} | sed -e 's/-[a-zA-Z0-9.+_]*$//')
 git_nodist=$(echo ${git_nvr} | sed -e 's/-[a-zA-Z0-9.+_]*$//')
 
 if [[ "${git_nodist}" != "${test_nodist}" ]]; then
@@ -132,7 +132,7 @@ if [[ "${git_nodist}" != "${test_nodist}" ]]; then
     warn "Warning: Trying as a Software Collection"
     scl=$(echo ${git_nodist} |sed -e "s/-${test_nodist}//")
     test_nvr=$(build_with_dist_scl "SPECS/${SPEC}" ${mydist} ${scl})
-    test_nodist=$(echo ${test_nvr} | sed -e 's/-[a-zA-Z0-9.+]*$//')
+    test_nodist=$(echo ${test_nvr} | sed -e 's/-[a-zA-Z0-9.+_]*$//')
 fi
 
 if [[ "${git_nodist}" != "${test_nodist}" ]]; then