diff --git a/src/openalpr/detection/detectormorph.cpp b/src/openalpr/detection/detectormorph.cpp
index 0d6e81e..cf6a2dc 100644
--- a/src/openalpr/detection/detectormorph.cpp
+++ b/src/openalpr/detection/detectormorph.cpp
@@ -137,6 +137,7 @@ const int num_thresholds = 7;
 int numValidChars = 0;
 Mat rotated;
 for (int i = 0; i < rects.size(); i++) {
+	numValidChars = 0;
 	RotatedRect PlateRect = rects[i];
 	Size rect_size = PlateRect.size;