diff --git a/src/pixie/fileformats/jpg.nim b/src/pixie/fileformats/jpg.nim
index cc241df..1dd167f 100644
--- a/src/pixie/fileformats/jpg.nim
+++ b/src/pixie/fileformats/jpg.nim
@@ -6,7 +6,7 @@ when defined(pixieUseStb):
 const
   jpgStartOfImage* = [0xFF.uint8, 0xD8]
 
-proc decodeJpg*(data: seq[uint8]): Image {.raises: [PixieError].} =
+proc decodeJpg*(data: string): Image {.inline, raises: [PixieError].} =
   ## Decodes the JPEG into an Image.
   when not defined(pixieUseStb):
     raise newException(PixieError, "Decoding JPG requires -d:pixieUseStb")
@@ -19,10 +19,6 @@ proc decodeJpg*(data: seq[uint8]): Image {.raises: [PixieError].} =
     result = newImage(width, height)
     copyMem(result.data[0].addr, pixels[0].unsafeAddr, pixels.len)
 
-proc decodeJpg*(data: string): Image {.inline, raises: [PixieError].} =
-  ## Decodes the JPEG data into an Image.
-  decodeJpg(cast[seq[uint8]](data))
-
 proc encodeJpg*(image: Image): string {.raises: [PixieError].} =
   ## Encodes Image into a JPEG data string.
   raise newException(PixieError, "Encoding JPG not supported yet")
diff --git a/src/pixie/fileformats/stb_image/stb_image.nim b/src/pixie/fileformats/stb_image/stb_image.nim
index d9269cc..1e46e73 100644
--- a/src/pixie/fileformats/stb_image/stb_image.nim
+++ b/src/pixie/fileformats/stb_image/stb_image.nim
@@ -11,17 +11,17 @@ proc stbi_image_free(retval_from_stbi_load: pointer)
   {.importc: "stbi_image_free", stbcall.}
 
 proc stbi_load_from_memory(
-  buffer: ptr cuchar,
+  buffer: pointer,
   len: cint,
   x, y, channels_in_file: var cint,
   desired_channels: cint
-): ptr cuchar
+): pointer
   {.importc: "stbi_load_from_memory", stbcall.}
 
-proc loadFromMemory*(buffer: seq[uint8], width, height: var int): seq[uint8] =
+proc loadFromMemory*(buffer: string, width, height: var int): string =
   var outWidth, outHeight, outComponents: cint
   let data = stbi_load_from_memory(
-    cast[ptr cuchar](buffer[0].unsafeAddr),
+    buffer[0].unsafeAddr,
     buffer.len.cint,
     outWidth,
     outHeight,