diff --git a/scripts/99_terraform.sh b/scripts/99_terraform.sh
index 3abb356..786abf7 100755
--- a/scripts/99_terraform.sh
+++ b/scripts/99_terraform.sh
@@ -31,6 +31,11 @@ EOF
     terraform init ${dir}
     terraform validate ${dir}
     rm -f ${dir}/tmp.tf
+    # hack to work around bug https://github.com/hashicorp/terraform/issues/21434
+    # TODO when fixed, remove this bloc and add "terraform fmt -recursive" to the end of this file
+    for file in $(grep ' = <<E' ${dir}/* | cut -d':' -f1 | sort | uniq); do
+        sed -Ei '/<<EO(Q|F)/,/EO(Q|F)/ s/^#*/#/' ${file}
+        terraform fmt ${dir}
+        sed -Ei '/<<EO(Q|F)/,/EO(Q|F)/ s/^[[:space:]]*#//' ${file}
+    done
 done
-
-terraform fmt -recursive