diff --git a/src/openalpr/alpr_impl.h b/src/openalpr/alpr_impl.h
index a97866e..2aa0da0 100644
--- a/src/openalpr/alpr_impl.h
+++ b/src/openalpr/alpr_impl.h
@@ -83,7 +83,7 @@ namespace alpr
       AlprFullDetails recognizeFullDetails(cv::Mat img, std::vector<cv::Rect> regionsOfInterest);
 
       AlprResults recognize( std::vector<char> imageBytes );
-	    AlprResults recognize( std::vector<char> imageBytes, std::vector<AlprRegionOfInterest> regionsOfInterest );
+      AlprResults recognize( std::vector<char> imageBytes, std::vector<AlprRegionOfInterest> regionsOfInterest );
       AlprResults recognize( unsigned char* pixelData, int bytesPerPixel, int imgWidth, int imgHeight, std::vector<AlprRegionOfInterest> regionsOfInterest );
       AlprResults recognize( cv::Mat img );
       AlprResults recognize( cv::Mat img, std::vector<cv::Rect> regionsOfInterest );