diff --git a/MagickCore/cache.c b/MagickCore/cache.c
index d0c63cebe1..fd141f2e8c 100644
--- a/MagickCore/cache.c
+++ b/MagickCore/cache.c
@@ -3813,7 +3813,7 @@ static MagickBooleanType OpenPixelCache(Image *image,const MapMode mode,
       cache_info->storage_class=UndefinedClass;
       cache_info->length=0;
       ThrowBinaryException(ResourceLimitError,"PixelCacheAllocationFailed",
-      image->filename);
+        image->filename);
     }
   columns=(size_t) (length/cache_info->rows/packet_size);
   if ((cache_info->columns != columns) || ((ssize_t) cache_info->columns < 0) ||
diff --git a/coders/sixel.c b/coders/sixel.c
index 697da0fe55..8b868189f6 100644
--- a/coders/sixel.c
+++ b/coders/sixel.c
@@ -401,7 +401,10 @@ static MagickBooleanType sixel_decode(Image *image,unsigned char *p,
             dmsx=imsx > attributed_ph ? imsx : attributed_ph;
             dmsy=imsy > attributed_pv ? imsy : attributed_pv;
             if (SetImageExtent(image,(size_t) dmsx,(size_t) dmsy,exception) == MagickFalse)
-              break;
+              {
+                imbuf=(sixel_pixel_t *) RelinquishMagickMemory(imbuf);
+                return(MagickFalse);
+              }
             dmbuf=(sixel_pixel_t *) AcquireQuantumMemory((size_t) dmsx,(size_t)
               dmsy*sizeof(sixel_pixel_t));
             if (dmbuf == (sixel_pixel_t *) NULL)
@@ -507,7 +510,10 @@ static MagickBooleanType sixel_decode(Image *image,unsigned char *p,
             dmsx=nx;
             dmsy=ny;
             if (SetImageExtent(image,(size_t) dmsx,(size_t) dmsy,exception) == MagickFalse)
-              break;
+              {
+                imbuf=(sixel_pixel_t *) RelinquishMagickMemory(imbuf);
+                return(MagickFalse);
+              }
             dmbuf=(sixel_pixel_t *) AcquireQuantumMemory((size_t) dmsx,(size_t)
               dmsy*sizeof(sixel_pixel_t));
             if (dmbuf == (sixel_pixel_t *) NULL)