diff --git a/examples/detector.c b/examples/detector.c
index 15575331..96855c46 100644
--- a/examples/detector.c
+++ b/examples/detector.c
@@ -290,6 +290,12 @@ void validate_detector_flip(char *datacfg, char *cfgfile, char *weightfile, char
     float nms = .45;
 
     int nthreads = 4;
+    // fix an issue with YOLO crash if number of validated examples less then 4
+    // due to trying to access to unaddressable memory path[i+t], when i+t > nthreads
+    if (m < 4) { 
+        nthreads = m;
+    }
+    
     image *val = calloc(nthreads, sizeof(image));
     image *val_resized = calloc(nthreads, sizeof(image));
     image *buf = calloc(nthreads, sizeof(image));
@@ -423,6 +429,12 @@ void validate_detector(char *datacfg, char *cfgfile, char *weightfile, char *out
     float nms = .45;
 
     int nthreads = 4;
+    // fix an issue with YOLO crash if number of validated examples less then 4
+    // due to trying to access to unaddressable memory path[i+t], when i+t > nthreads
+    if (m < 4) { 
+        nthreads = m;
+    }
+    
     image *val = calloc(nthreads, sizeof(image));
     image *val_resized = calloc(nthreads, sizeof(image));
     image *buf = calloc(nthreads, sizeof(image));