diff --git a/action.yml b/action.yml
index fd3baac..5fa9147 100644
--- a/action.yml
+++ b/action.yml
@@ -34,6 +34,9 @@ inputs:
   workdir:
     description: 'Working directory relative to the root directory.'
     default: '.'
+  file_find_pattern:
+    description: 'File find pattern for dupe-files'
+    default: '*.sql'
 runs:
   using: 'composite'
   steps:
@@ -54,6 +57,7 @@ runs:
         INPUT_FAIL_ON_ERROR: ${{ inputs.fail_on_error }}
         INPUT_REVIEWDOG_FLAGS: ${{ inputs.reviewdog_flags }}
         INPUT_WORKDIR: ${{ inputs.workdir }}
+        INPUT_FILE_FIND_PATTERN: ${{ inputs.file_find_pattern }}
 branding:
   icon: 'check-circle'
   color: 'blue'
diff --git a/script.sh b/script.sh
index 4a58751..60b16b9 100755
--- a/script.sh
+++ b/script.sh
@@ -15,7 +15,7 @@ export REVIEWDOG_GITHUB_API_TOKEN="${INPUT_GITHUB_TOKEN}"
 
 echo Scanning ${INPUT_DIRECTORY}
 
-find ${INPUT_DIRECTORY} -type f  | sed 's_.*/__' | awk -F"__" '{print $1}' | sort | uniq -d |
+find ${INPUT_DIRECTORY} -type f -name "\"${INPUT_FILE_FIND_PATTERN}\"" | sed 's_.*/__' | awk -F"__" '{print $1}' | sort | uniq -d |
 while read fileName
 do
   find $dirname -type f | grep "${fileName}" |
@@ -25,6 +25,12 @@ do
   done
 done
 
+find ${INPUT_DIRECTORY} -type f -name "\"${INPUT_FILE_FIND_PATTERN}\"" | sed 's_.*/__' | awk -F"__" '{print $1}' | sort | grep '\.' |
+while read fileName
+do
+  echo "${fileName}: Invalid version format" >> .dupe.out
+done
+
 echo '::group::Found duplicate files'
 cat .dupe.out
 echo '::endgroup::'