diff --git a/library_generation/test/resources/gapic_options/example_gapic.legacy.yaml b/library_generation/test/resources/gapic_options/example_gapic.legacy.yaml
new file mode 100644
index 0000000000..7da8426f34
--- /dev/null
+++ b/library_generation/test/resources/gapic_options/example_gapic.legacy.yaml
@@ -0,0 +1 @@
+# this file is only used in testing `get_gapic_opts` in utilities.sh
\ No newline at end of file
diff --git a/library_generation/test/resources/gapic_options/example_gapic_legacy.yaml b/library_generation/test/resources/gapic_options/example_gapic_legacy.yaml
new file mode 100644
index 0000000000..7da8426f34
--- /dev/null
+++ b/library_generation/test/resources/gapic_options/example_gapic_legacy.yaml
@@ -0,0 +1 @@
+# this file is only used in testing `get_gapic_opts` in utilities.sh
\ No newline at end of file
diff --git a/library_generation/utilities.sh b/library_generation/utilities.sh
index 88d3a13657..d34e467fec 100755
--- a/library_generation/utilities.sh
+++ b/library_generation/utilities.sh
@@ -59,7 +59,7 @@ get_gapic_opts() {
     gapic_config="gapic-config=${gapic_config},"
   fi
   grpc_service_config=$(find "${proto_path}" -type f -name "*service_config.json")
-  api_service_config=$(find "${proto_path}" -maxdepth 1 -type f \( -name "*.yaml" ! -name "*gapic.yaml" \))
+  api_service_config=$(find "${proto_path}" -maxdepth 1 -type f \( -name "*.yaml" ! -name "*gapic*.yaml" \))
   if [ "${rest_numeric_enums}" == "true" ]; then
     rest_numeric_enums="rest-numeric-enums,"
   else