1 files changed, 1 insertions, 1 deletions

diff --git a/util-linux/fdisk.c b/util-linux/fdisk.c
index 1bb3a9d4e..6a194fd1a 100644
--- a/util-linux/fdisk.c
+++ b/util-linux/fdisk.c
@@ -460,7 +460,7 @@ read_line(const char *prompt)
                 line_buffer[--sz] = '\0';
 
         line_ptr = line_buffer;
-        while (*line_ptr && !isgraph(*line_ptr))
+        while (*line_ptr != '\0' && (unsigned char)*line_ptr <= ' ')
                 line_ptr++;
         return *line_ptr;
 }