diff --git a/module/spl/spl-generic.c b/module/spl/spl-generic.c
index 22ea507811..39357617cb 100644
--- a/module/spl/spl-generic.c
+++ b/module/spl/spl-generic.c
@@ -536,7 +536,7 @@ hostid_exec(void)
 	 * '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid
 	 * for us to use.  It's a horrific solution but it will do for now.
 	 */
-	rc = call_usermodehelper(argv[0], argv, envp, 1);
+	rc = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
 	if (rc)
 		printk("SPL: Failed user helper '%s %s %s', rc = %d\n",
 		       argv[0], argv[1], argv[2], rc);
@@ -607,7 +607,7 @@ set_kallsyms_lookup_name(void)
 	                 NULL };
 	int rc;
 
-	rc = call_usermodehelper(argv[0], argv, envp, 1);
+	rc = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
 
 	/*
 	 * Due to I/O buffering the helper may return successfully before
diff --git a/module/splat/splat-linux.c b/module/splat/splat-linux.c
index 76e2398dab..0a1808f611 100644
--- a/module/splat/splat-linux.c
+++ b/module/splat/splat-linux.c
@@ -166,7 +166,7 @@ splat_linux_drop_slab(struct file *file)
 	                 NULL };
 	int rc;
 
-	rc = call_usermodehelper(argv[0], argv, envp, 1);
+	rc = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
 	if (rc)
 		splat_vprint(file, SPLAT_LINUX_TEST3_NAME,
 	            "Failed user helper '%s %s %s', rc = %d\n",
diff --git a/module/splat/splat-vnode.c b/module/splat/splat-vnode.c
index 7d1c75f179..a7034c1155 100644
--- a/module/splat/splat-vnode.c
+++ b/module/splat/splat-vnode.c
@@ -75,7 +75,7 @@ splat_vnode_user_cmd(struct file *file, void *arg,
 	                 NULL };
 	int rc;
 
-	rc = call_usermodehelper(sh_path, argv, envp, 1);
+	rc = call_usermodehelper(sh_path, argv, envp, UMH_WAIT_PROC);
 	if (rc) {
 		splat_vprint(file, name,
 			     "Failed command: %s %s %s (%d)\n",