diff --git a/sys/cddl/dev/systrace/systrace.c b/sys/cddl/dev/systrace/systrace.c
index 83f079373124..ff63129feef9 100644
--- a/sys/cddl/dev/systrace/systrace.c
+++ b/sys/cddl/dev/systrace/systrace.c
@@ -168,9 +168,6 @@ static dtrace_pops_t systrace_pops = {
 static struct cdev		*systrace_cdev;
 static dtrace_provider_id_t	systrace_id;
 
-typedef void (*systrace_dtrace_probe)(dtrace_id_t, uintptr_t, uintptr_t,
-    uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
-
 #if !defined(LINUX_SYSTRACE)
 /*
  * Probe callback function.
@@ -214,8 +211,7 @@ systrace_probe(u_int32_t id, int sysnum, struct sysent *sysent, void *params,
 	}
 
 	/* Process the probe using the converted argments. */
-	((systrace_dtrace_probe)(dtrace_probe))(id, uargs[0], uargs[1],
-	    uargs[2], uargs[3], uargs[4], uargs[5], uargs[6], uargs[7]);
+	dtrace_probe(id, uargs[0], uargs[1], uargs[2], uargs[3], uargs[4]);
 }
 
 #endif