diff --git a/spa/include/spa/debug/format.h b/spa/include/spa/debug/format.h
index 5fe0eac3e..856e9954c 100644
--- a/spa/include/spa/debug/format.h
+++ b/spa/include/spa/debug/format.h
@@ -5,6 +5,8 @@
 #ifndef SPA_DEBUG_FORMAT_H
 #define SPA_DEBUG_FORMAT_H
 
+#include <inttypes.h>
+
 #include <spa/pod/parser.h>
 #include <spa/utils/string.h>
 #include <spa/debug/context.h>
@@ -41,10 +43,11 @@ spa_debug_strbuf_format_value(struct spa_strbuf *buffer, const struct spa_type_i
 		break;
 	case SPA_TYPE_Id:
 	{
-		const char *str = spa_debug_type_find_short_name(info, *(int32_t *) body);
+		uint32_t value = *(uint32_t *) body;
+		const char *str = spa_debug_type_find_short_name(info, value);
 		char tmp[64];
 		if (str == NULL) {
-			snprintf(tmp, sizeof(tmp), "%d", *(int32_t*)body);
+			snprintf(tmp, sizeof(tmp), "%" PRIu32, value);
 			str = tmp;
 		}
 		spa_strbuf_append(buffer, "%s", str);
diff --git a/spa/include/spa/debug/pod.h b/spa/include/spa/debug/pod.h
index 21771691a..4ff3f3e01 100644
--- a/spa/include/spa/debug/pod.h
+++ b/spa/include/spa/debug/pod.h
@@ -39,8 +39,8 @@ spa_debugc_pod_value(struct spa_debug_context *ctx, int indent, const struct spa
 		spa_debugc(ctx, "%*s" "Bool %s", indent, "", (*(int32_t *) body) ? "true" : "false");
 		break;
 	case SPA_TYPE_Id:
-		spa_debugc(ctx, "%*s" "Id %-8" PRId32 " (%s)", indent, "", *(int32_t *) body,
-		       spa_debug_type_find_name(info, *(int32_t *) body));
+		spa_debugc(ctx, "%*s" "Id %-8" PRIu32 " (%s)", indent, "", *(uint32_t *) body,
+		       spa_debug_type_find_name(info, *(uint32_t *) body));
 		break;
 	case SPA_TYPE_Int:
 		spa_debugc(ctx, "%*s" "Int %" PRId32, indent, "", *(int32_t *) body);