diff --git a/cmd/zdb/zdb.c b/cmd/zdb/zdb.c
index 0f09ec70a994..dd8e652d9a49 100644
--- a/cmd/zdb/zdb.c
+++ b/cmd/zdb/zdb.c
@@ -30,7 +30,6 @@
 
 #include <stdio.h>
 #include <unistd.h>
-#include <stdio_ext.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <sys/zfs_context.h>
diff --git a/cmd/ztest/ztest.c b/cmd/ztest/ztest.c
index 1aa1d3860007..695074d5793a 100644
--- a/cmd/ztest/ztest.c
+++ b/cmd/ztest/ztest.c
@@ -121,7 +121,6 @@
 #include <sys/dsl_userhold.h>
 #include <sys/abd.h>
 #include <stdio.h>
-#include <stdio_ext.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <signal.h>