diff --git a/src/glsl/pp/sl_pp_process.c b/src/glsl/pp/sl_pp_process.c
index 563ea948e70..f89986dd8ef 100644
--- a/src/glsl/pp/sl_pp_process.c
+++ b/src/glsl/pp/sl_pp_process.c
@@ -146,6 +146,9 @@ sl_pp_process_get(struct sl_pp_context *context,
                      found_eof = 1;
                      found_eol = 1;
                      break;
+
+                  default:
+                     break;
                   }
                }