diff --git a/sim/mips/ChangeLog b/sim/mips/ChangeLog
index 7ced3edd1b..8164bb28b4 100644
--- a/sim/mips/ChangeLog
+++ b/sim/mips/ChangeLog
@@ -1,3 +1,7 @@
+2020-12-14  Pavel I. Kryukov  <kryukov@frtk.ru>  (tiny change)
+
+	* cp1.c: Include <stdlib.h>.
+
 2020-07-29  Simon Marchi  <simon.marchi@efficios.com>
 
 	* configure: Re-generate.
diff --git a/sim/mips/cp1.c b/sim/mips/cp1.c
index 82fdea2bcb..d81b07a20c 100644
--- a/sim/mips/cp1.c
+++ b/sim/mips/cp1.c
@@ -42,6 +42,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "sim-main.h"
 
+#include <stdlib.h>
+
 /* Within cp1.c we refer to sim_cpu directly.  */
 #define CPU cpu
 #define SD CPU_STATE(cpu)