diff --git a/libc/fmt/palandprintf.c b/libc/fmt/palandprintf.c
index 4e6eec66..002b1f02 100644
--- a/libc/fmt/palandprintf.c
+++ b/libc/fmt/palandprintf.c
@@ -121,6 +121,7 @@ static int ppatoi(const char **str) {
 hidden int palandprintf(void *fn, void *arg, const char *format, va_list va) {
   void *p;
   char qchar;
+  bool longdouble;
   long double ldbl;
   wchar_t charbuf[1];
   const char *alphabet;
@@ -209,6 +210,7 @@ hidden int palandprintf(void *fn, void *arg, const char *format, va_list va) {
 
     /* evaluate length field */
     signbit = 31;
+    longdouble = false;
     switch (*format) {
       case 'j': /* intmax_t */
         format++;
@@ -224,10 +226,13 @@ hidden int palandprintf(void *fn, void *arg, const char *format, va_list va) {
       case 't': /* ptrdiff_t */
       case 'z': /* size_t */
       case 'Z': /* size_t */
-      case 'L': /* long double */
         format++;
         signbit = 63;
         break;
+      case 'L': /* long double */
+        format++;
+        longdouble = true;
+        break;
       case 'h':
         format++;
         if (*format == 'h') {
@@ -280,7 +285,7 @@ hidden int palandprintf(void *fn, void *arg, const char *format, va_list va) {
 
       case 'f':
       case 'F':
-        if (signbit == 63) {
+        if (longdouble) {
           ldbl = va_arg(va, long double);
         } else {
           ldbl = va_arg(va, double);
diff --git a/test/libc/fmt/sprintf_s.inc b/test/libc/fmt/sprintf_s.inc
index e6c1feb0..497892e7 100644
--- a/test/libc/fmt/sprintf_s.inc
+++ b/test/libc/fmt/sprintf_s.inc
@@ -80,7 +80,7 @@ TEST(SUITE(snprintf), testReprChar16) {
 }
 
 TEST(SUITE(snprintf), testReprChar32) {
-  EXPECT_STREQ("L'♥'", Format("%`'Lc", L'♥'));
+  EXPECT_STREQ("L'♥'", Format("%`'lc", L'♥'));
 }
 
 TEST(SUITE(snprintf), testReprUtf8) {