1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 65da87fce907..5ca2df790d3c 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -156,7 +156,7 @@ static char *do_shell(int argc, char *argv[])
                 nread--;
 
         /* remove trailing new lines */
-        while (buf[nread - 1] == '\n')
+        while (nread > 0 && buf[nread - 1] == '\n')
                 nread--;
 
         buf[nread] = 0;