diff --git a/sim/cris/ChangeLog b/sim/cris/ChangeLog
index 1b4a5fe3366..4e7b919a3c5 100644
--- a/sim/cris/ChangeLog
+++ b/sim/cris/ChangeLog
@@ -1,3 +1,7 @@
+2021-05-23  Mike Frysinger  <vapier@gentoo.org>
+
+	* sim-if.c (sim_open): Delete "x" after PRI macros.
+
 2021-05-23  Mike Frysinger  <vapier@gentoo.org>
 
 	* sim-if.c: Include unistd.h.
diff --git a/sim/cris/sim-if.c b/sim/cris/sim-if.c
index cea499d1daa..6613a93ecc5 100644
--- a/sim/cris/sim-if.c
+++ b/sim/cris/sim-if.c
@@ -879,7 +879,7 @@ sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd,
 
   /* Allocate core managed memory if none specified by user.  */
   if (sim_core_read_buffer (sd, NULL, read_map, &c, startmem, 1) == 0)
-    sim_do_commandf (sd, "memory region 0x%" PRIx32 "x,0x%" PRIu32 "x",
+    sim_do_commandf (sd, "memory region 0x%" PRIx32 ",0x%" PRIu32,
 		     startmem, endmem - startmem);
 
   /* Allocate simulator I/O managed memory if none specified by user.  */