diff --git a/src/modules/loaders/loader_argb.c b/src/modules/loaders/loader_argb.c
index 1519054..913ce83 100644
--- a/src/modules/loaders/loader_argb.c
+++ b/src/modules/loaders/loader_argb.c
@@ -1,13 +1,47 @@
 #include "loader_common.h"
 
+#include <sys/mman.h>
+
+static struct {
+   const unsigned char *data, *dptr;
+   unsigned int        size;
+} mdata;
+
+static void
+mm_init(void *src, unsigned int size)
+{
+   mdata.data = mdata.dptr = src;
+   mdata.size = size;
+}
+
+static void
+mm_seek(unsigned int offs)
+{
+   mdata.dptr = mdata.data + offs;
+}
+
+static int
+mm_read(void *dst, unsigned int len)
+{
+   if (mdata.dptr + len > mdata.data + mdata.size)
+      return 1;                 /* Out of data */
+
+   memcpy(dst, mdata.dptr, len);
+   mdata.dptr += len;
+
+   return 0;
+}
+
 int
 load2(ImlibImage * im, int load_data)
 {
    int                 rc;
+   void               *fdata;
    int                 alpha;
    DATA32             *ptr;
    int                 y;
-   char                buf[256], buf2[256];
+   const char         *fptr, *row;
+   unsigned int        size;
 
 #ifdef WORDS_BIGENDIAN
    int                 l;
@@ -15,17 +49,23 @@ load2(ImlibImage * im, int load_data)
 
    rc = LOAD_FAIL;
 
+   fdata = mmap(NULL, im->fsize, PROT_READ, MAP_SHARED, fileno(im->fp), 0);
+   if (fdata == MAP_FAILED)
+      return rc;
+
+   mm_init(fdata, im->fsize);
+
    /* header */
 
-   buf[0] = '\0';
-   if (!fgets(buf, 255, im->fp))
+   fptr = fdata;
+   size = im->fsize > 31 ? 31 : im->fsize;      /* Look for \n in at most 31 byte */
+   row = memchr(fptr, '\n', size);
+   if (!row)
       goto quit;
+   row += 1;                    /* After LF */
 
-   buf2[0] = '\0';
    im->w = im->h = alpha = 0;
-   sscanf(buf, "%s %i %i %i", buf2, &im->w, &im->h, &alpha);
-   if (strcmp(buf2, "ARGB"))
-      goto quit;
+   sscanf(fptr, "ARGB %i %i %i", &im->w, &im->h, &alpha);
 
    if (!IMAGE_DIMENSIONS_OK(im->w, im->h))
       goto quit;
@@ -47,9 +87,11 @@ load2(ImlibImage * im, int load_data)
    if (!ptr)
       goto quit;
 
+   mm_seek(row - fptr);
+
    for (y = 0; y < im->h; y++)
      {
-        if (fread(ptr, im->w, 4, im->fp) != 4)
+        if (mm_read(ptr, 4 * im->w))
            goto quit;
 
 #ifdef WORDS_BIGENDIAN
@@ -70,6 +112,8 @@ load2(ImlibImage * im, int load_data)
  quit:
    if (rc <= 0)
       __imlib_FreeData(im);
+   if (fdata != MAP_FAILED)
+      munmap(fdata, im->fsize);
 
    return rc;
 }