diff --git a/lib/stdio/vfprintf.c b/lib/stdio/vfprintf.c
index bd0e5bf5..624e6718 100644
--- a/lib/stdio/vfprintf.c
+++ b/lib/stdio/vfprintf.c
@@ -206,7 +206,7 @@ vfprintf (FILE* f, char const* format, va_list ap)
                     }
                   while (precision > length)
                     {
-                      fputc ('0', f);
+                      fputc (' ', f);
                       precision--;
                       width--;
                       count++;
diff --git a/lib/stdio/vsnprintf.c b/lib/stdio/vsnprintf.c
index 5b22b2b2..a80d946e 100644
--- a/lib/stdio/vsnprintf.c
+++ b/lib/stdio/vsnprintf.c
@@ -223,7 +223,7 @@ vsnprintf (char *str, size_t size, char const* format, va_list ap)
                   while (precision > length)
                     {
                       if (count < size)
-                        *str++ = '0';
+                        *str++ = ' ';
                       precision--;
                       width--;
                       count++;
diff --git a/lib/tests/stdio/90-sprintf.c b/lib/tests/stdio/90-sprintf.c
index 2401195d..0a7ca0af 100644
--- a/lib/tests/stdio/90-sprintf.c
+++ b/lib/tests/stdio/90-sprintf.c
@@ -26,8 +26,18 @@ int
 main ()
 {
   char buf[20];
-  double d = 0;
-  sprintf (buf, "%.6g", d);
+
+  int i = 0;
+  printf ("%3.6d\n", i);
+  sprintf (buf, "%3.6d", i);
+  puts (buf);
+
+  double d = 1;
+  printf ("%3.6f\n", d);
+  sprintf (buf, "%3.6f", d);
+  puts (buf);
+  printf ("%3.6g\n", d);
+  sprintf (buf, "%3.6g", d);
   puts (buf);
 
   return 0;
diff --git a/lib/tests/stdio/90-sprintf.stdout b/lib/tests/stdio/90-sprintf.stdout
index 573541ac..ff6ae31d 100644
--- a/lib/tests/stdio/90-sprintf.stdout
+++ b/lib/tests/stdio/90-sprintf.stdout
@@ -1 +1,6 @@
-0
+000000
+000000
+1.000000
+1.000000
+  1
+  1