diff --git a/src/gallium/auxiliary/util/u_debug_describe.c b/src/gallium/auxiliary/util/u_debug_describe.c
index df73ed8..499c360 100644
--- a/src/gallium/auxiliary/util/u_debug_describe.c
+++ b/src/gallium/auxiliary/util/u_debug_describe.c
@@ -30,7 +30,7 @@
 #include "util/u_string.h"
 
 void
-debug_describe_reference(char* buf, const struct pipe_reference*ptr)
+debug_describe_reference(char* buf, UNUSED const struct pipe_reference*ptr)
 {
    strcpy(buf, "pipe_object");
 }
diff --git a/src/gallium/auxiliary/util/u_format.c b/src/gallium/auxiliary/util/u_format.c
index 659189f..cda6aa7 100644
--- a/src/gallium/auxiliary/util/u_format.c
+++ b/src/gallium/auxiliary/util/u_format.c
@@ -46,7 +46,7 @@ boolean
 util_format_is_float(enum pipe_format format)
 {
    const struct util_format_description *desc = util_format_description(format);
-   unsigned i;
+   int i;
 
    assert(desc);
    if (!desc) {