diff --git a/src/add-ons/accelerants/radeon_hd/atombios/atom.cpp b/src/add-ons/accelerants/radeon_hd/atombios/atom.cpp
index 5649e545eb..6df03d2c51 100644
--- a/src/add-ons/accelerants/radeon_hd/atombios/atom.cpp
+++ b/src/add-ons/accelerants/radeon_hd/atombios/atom.cpp
@@ -248,7 +248,7 @@ atom_get_src_int(atom_exec_context *ctx, uint8 attr, int *ptr,
 			val = gctx->scratch[((gctx->fb_base + idx) / 4)];
 			if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
 				ERROR("%s: fb tried to read beyond scratch region!"
-					" %" B_PRIu32 " vs. %d\n", __func__,
+					" %" B_PRIu32 " vs. %" B_PRIu32 "\n", __func__,
 					gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
 				val = 0;
 			} else
@@ -472,7 +472,7 @@ atom_put_dst(atom_exec_context *ctx, int arg, uint8 attr,
 			(*ptr)++;
 			if ((gctx->fb_base + (idx * 4)) > gctx->scratch_size_bytes) {
 				ERROR("%s: fb tried to write beyond scratch region! "
-					"%" B_PRIu32 " vs. %d\n", __func__,
+					"%" B_PRIu32 " vs. %" B_PRIu32 "\n", __func__,
 					gctx->fb_base + (idx * 4), gctx->scratch_size_bytes);
 			} else
 				gctx->scratch[(gctx->fb_base / 4) + idx] = val;
diff --git a/src/add-ons/accelerants/radeon_hd/atombios/atom.h b/src/add-ons/accelerants/radeon_hd/atombios/atom.h
index 6ad02878c5..2644cb1c4f 100644
--- a/src/add-ons/accelerants/radeon_hd/atombios/atom.h
+++ b/src/add-ons/accelerants/radeon_hd/atombios/atom.h
@@ -143,7 +143,7 @@ typedef struct atom_context_s {
 	int cs_equal, cs_above;
 	int io_mode;
 	uint32 *scratch;
-	int scratch_size_bytes;
+	uint32 scratch_size_bytes;
 } atom_context;
 
 extern int atom_debug;