diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index 2c044b157..7e2b76b13 100755
--- a/letsencrypt-auto-source/letsencrypt-auto
+++ b/letsencrypt-auto-source/letsencrypt-auto
@@ -481,10 +481,10 @@ BOOTSTRAP_RPM_PYTHON3_LEGACY_VERSION=1
 
 EnablePython36SCL() {
   if "$EXISTS" python3.6 > /dev/null 2> /dev/null; then
-      return
+      return 0
   fi
   if ! scl --list 2>/dev/null | grep -q rh-python36; then
-      return
+      return 0
   fi
   set +e
   . scl_source enable rh-python36
diff --git a/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh b/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
index 4f48eec04..def5c3956 100644
--- a/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
+++ b/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
@@ -4,10 +4,10 @@ BOOTSTRAP_RPM_PYTHON3_LEGACY_VERSION=1
 
 EnablePython36SCL() {
   if "$EXISTS" python3.6 > /dev/null 2> /dev/null; then
-      return
+      return 0
   fi
   if ! scl --list 2>/dev/null | grep -q rh-python36; then
-      return
+      return 0
   fi
   set +e
   . scl_source enable rh-python36