diff --git a/script/ensure_license_headers.sh b/script/ensure_license_headers.sh
index 7a2b069da..7e6266027 100755
--- a/script/ensure_license_headers.sh
+++ b/script/ensure_license_headers.sh
@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 
-LINES="$(grep -E "Copyright \((c|C)\)" -rL --include=\*.kt --exclude-dir=generated-src --exclude-dir=projects .)"
-STR_LEN=${#LINES}
-if (( $STR_LEN > 0 )); then
+LINES="$(grep -E "Copyright \((c|C)\)" -rL --include=\*.kt --include=\*.java --exclude-dir=generated-src --exclude-dir=projects --exclude-dir=gen --exclude-dir=build --exclude-dir=.gradle .)"
+NUM_LINES=${#LINES}
+if (( $NUM_LINES > 0 )); then
   echo "These files seem to be missing a license header:"
-  echo $LINES
+  echo $LINES | tr ' ' '\n'
   exit 1
 fi