diff --git a/frontends/framebuffer/font_internal.c b/frontends/framebuffer/font_internal.c
index d755681c6..4d28c61ad 100644
--- a/frontends/framebuffer/font_internal.c
+++ b/frontends/framebuffer/font_internal.c
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 
 #include "utils/nsoption.h"
+#include "utils/utils.h"
 #include "utils/utf8.h"
 #include "netsurf/utf8.h"
 #include "netsurf/layout.h"
@@ -270,7 +271,8 @@ fb_get_glyph(uint32_t ucs4, enum fb_font_style style, int scale)
 				break;
 			}
 		}
-		/* Fall through. */
+		fallthrough;
+
 	case FB_BOLD:
 		section = fb_bold_section_table[ucs4 / 256];
 		if (section != 0 || ucs4 / 256 == 0) {
@@ -281,7 +283,8 @@ fb_get_glyph(uint32_t ucs4, enum fb_font_style style, int scale)
 				break;
 			}
 		}
-		/* Fall through. */
+		fallthrough;
+
 	case FB_ITALIC:
 		section = fb_italic_section_table[ucs4 / 256];
 		if (section != 0 || ucs4 / 256 == 0) {
@@ -292,7 +295,8 @@ fb_get_glyph(uint32_t ucs4, enum fb_font_style style, int scale)
 				break;
 			}
 		}
-		/* Fall through. */
+		fallthrough;
+
 	case FB_REGULAR:
 		section = fb_regular_section_table[ucs4 / 256];
 		if (section != 0 || ucs4 / 256 == 0) {
@@ -303,7 +307,8 @@ fb_get_glyph(uint32_t ucs4, enum fb_font_style style, int scale)
 				break;
 			}
 		}
-		/* Fall through. */
+		fallthrough;
+
 	default:
 		glyph_data = get_codepoint(ucs4, style & FB_ITALIC);
 		break;