diff --git a/lib/libc/printf.c b/lib/libc/printf.c
index 6931a7e..a856345 100644
--- a/lib/libc/printf.c
+++ b/lib/libc/printf.c
@@ -95,6 +95,7 @@
  *
  * The following padding specifiers are supported by this print
  * %0NN - Left-pad the number with 0s (NN is a decimal number)
+ * %NN - Left-pad the number with spaces (NN is a decimal number)
  *
  * The print exits on all other formats specifiers other than valid
  * combinations of the above specifiers.
@@ -191,6 +192,27 @@
 					fmt++;
 				}
 				assert(0); /* Unreachable */
+			case '1':
+			case '2':
+			case '3':
+			case '4':
+			case '5':
+			case '6':
+			case '7':
+			case '8':
+			case '9':
+				padc = ' ';
+				padn = 0;
+
+				for (;;) {
+					char ch = *fmt;
+					if ((ch < '0') || (ch > '9')) {
+						goto loop;
+					}
+					padn = (padn * 10) + (ch - '0');
+					fmt++;
+				}
+				assert(0); /* Unreachable */
 			default:
 				/* Exit on any other format specifier */
 				return -1;