diff --git a/dev/tests/run_tests.sh b/dev/tests/run_tests.sh
index 59717c1..50e733c 100755
--- a/dev/tests/run_tests.sh
+++ b/dev/tests/run_tests.sh
@@ -277,7 +277,7 @@ function setUp () {
 	touch "$SOURCE_DIR/$RECURSIVE_DIR/$N_FILE_1"
 	touch "$SOURCE_DIR/$RECURSIVE_DIR/$R_DIR_1/$R_FILE_1"
 	touch "$SOURCE_DIR/$RECURSIVE_DIR/$R_DIR_2/$R_FILE_2"
-	dd if=/dev/urandom of="$SOURCE_DIR/$RECURSIVE_DIR/$R_DIR_3/$R_FILE_3" bs=1M count=2
+	dd if=/dev/urandom of="$SOURCE_DIR/$RECURSIVE_DIR/$R_DIR_3/$R_FILE_3" bs=1048576 count=2
 	assertEquals "dd file creation" "0" $?
 	touch "$SOURCE_DIR/$RECURSIVE_DIR/$R_DIR_3/$EXCLUDED_FILE"