diff --git a/curl.spec b/curl.spec
index de93364..33f4fba 100644
--- a/curl.spec
+++ b/curl.spec
@@ -214,7 +214,7 @@ be installed.
 # <https://github.com/curl/curl/pull/11531>
 # disable test 1801
 # <https://github.com/bagder/curl/commit/21e82bd6#commitcomment-12226582>
-echo -e "313\n1801\n" >> tests/data/DISABLED
+printf "313\n1801\n" >> tests/data/DISABLED
 
 # test3026: avoid pthread_create() failure due to resource exhaustion on i386
 %ifarch %{ix86}