diff --git a/letsencrypt-auto-source/letsencrypt-auto b/letsencrypt-auto-source/letsencrypt-auto
index 9feaf5660..e0d9ea640 100755
--- a/letsencrypt-auto-source/letsencrypt-auto
+++ b/letsencrypt-auto-source/letsencrypt-auto
@@ -517,7 +517,7 @@ BootstrapRpmPython3Legacy() {
   fi
 
   # CentOS 6 must use rh-python36 from SCL
-  if $TOOL list python3-virtualenv >/dev/null 2>&1; then
+  if $TOOL list rh-python36 >/dev/null 2>&1; then
     python_pkgs="rh-python36
     "
   else
diff --git a/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh b/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
index 49b4b2b59..4804e6753 100644
--- a/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
+++ b/letsencrypt-auto-source/pieces/bootstrappers/rpm_python3_legacy.sh
@@ -27,7 +27,7 @@ BootstrapRpmPython3Legacy() {
   fi
 
   # CentOS 6 must use rh-python36 from SCL
-  if $TOOL list python3-virtualenv >/dev/null 2>&1; then
+  if $TOOL list rh-python36 >/dev/null 2>&1; then
     python_pkgs="rh-python36
     "
   else