diff --git a/stepmania/src/RageFileDriverZip.cpp b/stepmania/src/RageFileDriverZip.cpp
index c793a966a5..78b7222404 100644
--- a/stepmania/src/RageFileDriverZip.cpp
+++ b/stepmania/src/RageFileDriverZip.cpp
@@ -285,7 +285,7 @@ void RageFileDriverZip::ParseZipfile()
 		if( got == 0 ) /* skip */
 			continue;
 
-		zip.SeekCur( info.extra_field_length );
+		zip.Seek( zip.Tell() + info.extra_field_length );
 
 		FileInfo *pInfo = new FileInfo(info);
 		Files.push_back( pInfo );
diff --git a/stepmania/src/RageSurface_Load_JPEG.cpp b/stepmania/src/RageSurface_Load_JPEG.cpp
index 6b4dabbebc..738671519b 100644
--- a/stepmania/src/RageSurface_Load_JPEG.cpp
+++ b/stepmania/src/RageSurface_Load_JPEG.cpp
@@ -109,7 +109,7 @@ void RageFile_JPEG_skip_input_data( j_decompress_ptr cinfo, long num_bytes )
 	num_bytes -= in_buffer;
 
 	if( num_bytes )
-		src->file->SeekCur( num_bytes );
+		src->file->Seek( src->file->Tell() + num_bytes );
 }
 
 void RageFile_JPEG_term_source( j_decompress_ptr cinfo )