diff --git a/libc/fmt/vcscanf.c b/libc/fmt/vcscanf.c
index 4dda5b761..6098dc2a6 100644
--- a/libc/fmt/vcscanf.c
+++ b/libc/fmt/vcscanf.c
@@ -177,9 +177,11 @@ int vcscanf(int callback(void *), int unget(int, void *), void *arg,
       DecodeNumber:
         if (c != -1) {
           number = 0;
+          width = !width ? bits : width;
           do {
             diglet = kBase36[(unsigned char)c];
             if (1 <= diglet && diglet <= base) {
+              width -= 1;
               number *= base;
               number += diglet - 1;
             } else if (thousands && diglet == ',') {
@@ -187,7 +189,7 @@ int vcscanf(int callback(void *), int unget(int, void *), void *arg,
             } else {
               break;
             }
-          } while ((c = callback(arg)) != -1);
+          } while ((c = callback(arg)) != -1 && width > 0);
           if (!discard) {
             uint128_t bane = (uint128_t)1 << (bits - 1);
             if (!(number & ~((bane - 1) | (issigned ? 0 : bane))) ||
diff --git a/test/libc/fmt/sscanf_test.c b/test/libc/fmt/sscanf_test.c
index 7705985d3..2ce8194fa 100644
--- a/test/libc/fmt/sscanf_test.c
+++ b/test/libc/fmt/sscanf_test.c
@@ -141,3 +141,11 @@ TEST(sscanf, testDiscard_notIncludedInCount) {
   ASSERT_EQ(1, sscanf("hello there", "%*s %8s", buf));
   EXPECT_STREQ("there", buf);
 }
+
+TEST(sscanf, testFixedWidthFormat_Integer) {
+    int r, g, b;
+    ASSERT_EQ(3, sscanf("#321030", "#%2x%2b%2d", &r, &g, &b));
+    ASSERT_EQ(0x32, r);
+    ASSERT_EQ(2, g);
+    ASSERT_EQ(30, b);
+}