diff --git a/tests/pySim-prog_test/pySim-prog_test.sh b/tests/pySim-prog_test/pySim-prog_test.sh
index e768d8f6..215ebeee 100755
--- a/tests/pySim-prog_test/pySim-prog_test.sh
+++ b/tests/pySim-prog_test/pySim-prog_test.sh
@@ -134,6 +134,11 @@ function gen_ok_files {
 	    continue
 	fi
 	echo "Card is of type: $CARD_NAME"
+
+	if ! [ -r "$CARD_NAME.data" ]; then
+	    echo "Warning: no .data file for this card, skipping..."
+	    continue
+	fi
 	gen_ok_file $I $CARD_NAME
     done
 }
@@ -163,6 +168,11 @@ function run_test {
 	ADM_HEX=""
 	ADM_OPT="-a"
 
+	if ! [ -r "$CARD_NAME.data" ]; then
+	    echo "Warning: no .data file for this card, skipping..."
+	    continue
+	fi
+
 	source "$CARD_NAME.data"
 	if [ -n "$ADM_HEX" ]; then
 		ADM_OPT="-A"