diff --git a/test/parser_binary_test.sh b/test/parser_binary_test.sh
index 863555e..e8bc822 100755
--- a/test/parser_binary_test.sh
+++ b/test/parser_binary_test.sh
@@ -1,18 +1,21 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+function compare_proto() {
+    # Takes one argument, the relative path to the proto to compare.
+    echo $1
+    ./src/parser_binary $1 > "${1}_serialized.proto"
+    diff --side-by-side --ignore-all-space --ignore-blank-lines $1 "${1}_serialized.proto"
+}
+
 echo "Local protos:"
 LOCAL_PROTOS=$(find ./test/resources -name "*.proto" | sort)
 for f in $LOCAL_PROTOS; do
-    echo $f
-    ./src/parser_binary $f > "${f}_serialized.proto"
-    diff --side-by-side --ignore-all-space $f "${f}_serialized.proto"
+    compare_proto $f
 done
 
 echo "Google protos:"
 GOOGLE_PROTOS=$(find ./external/com_google_protobuf/src/google/protobuf -name "*.proto" | xargs grep --files-without-match "proto2" | sort)
 for f in $GOOGLE_PROTOS; do
-    echo $f
-    ./src/parser_binary $f > "${f}_serialized.proto"
-    diff --side-by-side --ignore-all-space $f "${f}_serialized.proto"
+    compare_proto $f
 done