diff --git a/run_all_tests.sh b/run_all_tests.sh
index 6cba5791a..c8012acb9 100755
--- a/run_all_tests.sh
+++ b/run_all_tests.sh
@@ -1,11 +1,21 @@
 #!/bin/bash
 
+# Usage : `bash run_all_tests.sh`
+
 # Search for all binary files that end with "test"
 files=$(find ./build/ -type f -name "*_test" -executable)
 
 # Execute each file found
+has_fail=false
 for file in $files
 do
     echo "Executing $file ..."
     ./$file
-done
\ No newline at end of file
+    if ! [ $? -eq 0 ]; then
+      has_fail=true
+    fi
+done
+
+if [ "$has_fail" = true ] ; then
+    exit 1
+fi
\ No newline at end of file