diff --git a/docs/CHANGES.TXT b/docs/CHANGES.TXT
index 5e37a791..4a4835c4 100644
--- a/docs/CHANGES.TXT
+++ b/docs/CHANGES.TXT
@@ -52,6 +52,7 @@
   - Extract multiple teletext pages simultaneously with separate output files
   - Use --tpage multiple times (e.g., --tpage 100 --tpage 200)
   - Output files are named with page suffix (e.g., output_p100.srt, output_p200.srt)
+- Fix: SPUPNG subtitle offset calculation to center based on actual image dimensions
 
 - New: Added --list-tracks (-L) option to list all tracks in media files without processing
   New: Chinese, Korean, Japanese support - proper encoding and OCR.
diff --git a/src/_deps/corrosion-src b/src/_deps/corrosion-src
deleted file mode 160000
index b1fab721..00000000
--- a/src/_deps/corrosion-src
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit b1fab721655c5c4b1b08a083d3cd29f163af75d0
diff --git a/src/lib_ccx/ccx_encoders_spupng.c b/src/lib_ccx/ccx_encoders_spupng.c
index 2619969c..9306f534 100644
--- a/src/lib_ccx/ccx_encoders_spupng.c
+++ b/src/lib_ccx/ccx_encoders_spupng.c
@@ -1103,11 +1103,7 @@ static void calculate_spupng_offsets(struct spupng_t *sp, struct encoder_ctx *ct
 	int screen_h;
 
 	/* Teletext is always PAL */
-	if (ctx->in_fileformat == 2)
-	{
-		screen_h = 576;
-	}
-	else if (ctx->is_pal)
+	if (ctx->in_fileformat == 2 || ctx->is_pal)
 	{
 		screen_h = 576;
 	}