diff --git a/src/output_common/render_context.h b/src/output_common/render_context.h
index 47f8ddbc..09f260af 100644
--- a/src/output_common/render_context.h
+++ b/src/output_common/render_context.h
@@ -105,6 +105,5 @@ void prepare_context_for_next_frame(RenderContext_t* ctx);
  *
  * don't inline for to ensure availability in tests.
  */
-void __attribute__((noinline)) epd_populate_line_mask(
-    uint8_t* line_mask, const uint8_t* dirty_columns, int mask_len
-);
\ No newline at end of file
+void __attribute__((noinline))
+epd_populate_line_mask(uint8_t* line_mask, const uint8_t* dirty_columns, int mask_len);
\ No newline at end of file