diff --git a/CHANGES b/CHANGES
index e1619a9fa125b990c875f78c470d16157ec9446b..29c9a6259f0b6041417a4064a5b0f94038d548f9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -28,6 +28,7 @@ OpenLDAP 2.4.20 Engineering
 	Fixed slapo-pcache entry dupe (ITS#6310)
 	Fixed slapo-syncprov checkpoint conversion (ITS#6370)
 	Fixed slapo-syncprov deadlock (ITS#6335)
+	Fixed slapo-syncprov memory leak (ITS#6376)
 	Fixed slapo-syncprov out of order changes (ITS#6346)
 	Build Environment
 		Fixed memrchr define (ITS#6351)
diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index 49a2cbe8da6e030d5274745a4259b83b69266b51..f67ed9d5506a9a8bbee2185768411492e3affa9b 100644
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -855,7 +855,14 @@ syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
 	}
 	/* In case someone else freed it already? */
 	if ( rs.sr_ctrls ) {
-		op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
+		int i;
+		for ( i=0; rs.sr_ctrls[i]; i++ ) {
+			if ( rs.sr_ctrls[i] == ctrls[0] ) {
+				op->o_tmpfree( ctrls[0]->ldctl_value.bv_val, op->o_tmpmemctx );
+				ctrls[0]->ldctl_value.bv_val = NULL;
+				break;
+			}
+		}
 		rs.sr_ctrls = NULL;
 	}