diff --git a/EyeRecToo/src/pupil-detection/PuRe.cpp b/EyeRecToo/src/pupil-detection/PuRe.cpp
index 6c24fcd0edfce4460cbbc33268e34fc18cf69251..3e9903abe625c50002195b49e0f8c9e72bcffa12 100644
--- a/EyeRecToo/src/pupil-detection/PuRe.cpp
+++ b/EyeRecToo/src/pupil-detection/PuRe.cpp
@@ -173,7 +173,7 @@ Mat PuRe::canny(const Mat &in, bool blurImage, bool useL2, int bins, float nonEd
 	}
 	low_th = lowHighThresholdRatio*high_th;
 
-	delete histogram;
+	delete[] histogram;
 
 	/*
 	 *  Non maximum supression