diff --git a/libc/malloc/dprintf.c b/libc/malloc/dprintf.c
index c83fd1050..1a2482fe4 100644
--- a/libc/malloc/dprintf.c
+++ b/libc/malloc/dprintf.c
@@ -4,16 +4,21 @@
 #include <paths.h>
 #include <fcntl.h>
 
-static char *uitostr(unsigned int val, int radix, int width)
+static char *fmtultostr(unsigned long val, int radix, int width)
 {
-    static char buf[6];
+    static char buf[34];
     char *p = buf + sizeof(buf) - 1;
     unsigned int c;
 
     *p = '\0';
     do {
+#ifdef _M_I86
+        c = radix;
+        val = __divmod(val, &c);
+#else
         c = val % radix;
         val = val / radix;
+#endif
         if (c > 9)
             *--p = 'a' - 10 + c;
         else
@@ -28,19 +33,22 @@ static char *uitostr(unsigned int val, int radix, int width)
 /*
  * Very tiny printf to console.
  * Supports:
- *  %{0-9}  width
+ *  %{0-9}  field width
+ *  %l{u,d,x,p}
  *  %u      unsigned decimal
  *  %d      decimal (positive numbers only)
- *  %p      zero-fill hexadecimal width 4
+ *  %p      pointer (zero-filled hexadecimal)
  *  %x      hexadecimal
  *  %s      string
  */
 int __dprintf(const char *fmt, ...)
 {
     unsigned int n;
+    unsigned long val;
     int radix, width;
     char *p;
     va_list va;
+    int lval;
     char b[80];
     static int fd = -1;
 
@@ -55,6 +63,7 @@ int __dprintf(const char *fmt, ...)
         if (*fmt == '%') {
             ++fmt;
             width = 0;
+            lval = 0;
             while (*fmt >= '0' && *fmt <= '9') {
                 width = width * 10 + *fmt - '0';
                 fmt++;
@@ -62,12 +71,17 @@ int __dprintf(const char *fmt, ...)
         again:
             switch (*fmt) {
             case 'l':
-                fmt++; goto again;
+                lval = 1;
+                fmt++;
+                goto again;
             case 's':
                 p = va_arg(va, char *);
                 goto outstr;
             case 'p':
-                width = 4;
+                if (sizeof(char *) == sizeof(unsigned long))
+                    lval = 1;
+                width = lval? 8: 4;
+                /* fall through */
             case 'x':
                 radix = 16;
                 goto convert;
@@ -75,7 +89,8 @@ int __dprintf(const char *fmt, ...)
             case 'u':
                 radix = 10;
         convert:
-                p = uitostr(va_arg(va, unsigned int), radix, width);
+                val = lval? va_arg(va, unsigned long): va_arg(va, unsigned int);
+                p = fmtultostr(val, radix, width);
         outstr:
                 while (*p && n < sizeof(b))
                     b[n++] = *p++;
diff --git a/libc/malloc/fmemalloc.c b/libc/malloc/fmemalloc.c
index 27bb223e4..78506be1a 100644
--- a/libc/malloc/fmemalloc.c
+++ b/libc/malloc/fmemalloc.c
@@ -36,7 +36,7 @@ void __far *fmemalloc(unsigned long size)
 #if DEBUG
     total += size;
     if (size > maxsize) maxsize = size;
-    debug("total %lu, maxsize %lu\n", (unsigned)total, (unsigned)maxsize);
+    debug("total %lu, maxsize %lu\n", total, maxsize);
 #endif
     return MK_FP(seg, 0);
 }