1 files changed, 2 insertions, 1 deletions

diff --git a/libbb/bb_strtod.c b/libbb/bb_strtod.c
index 0515ff867..39bdeb5e5 100644
--- a/libbb/bb_strtod.c
+++ b/libbb/bb_strtod.c
@@ -17,7 +17,8 @@ double FAST_FUNC bb_strtod(const char *arg, char **endp)
         double v;
         char *endptr;
 
-        if (arg[0] != '-' && NOT_DIGIT(arg[0]))
+        /* Allow .NN form. People want to use "sleep .15" etc */
+        if (arg[0] != '-' && arg[0] != '.' && NOT_DIGIT(arg[0]))
                 goto err;
         errno = 0;
         v = strtod(arg, &endptr);