diff --git a/sys/kern/sysctl.c b/sys/kern/sysctl.c
index 9feab06..0018beb 100644
--- a/sys/kern/sysctl.c
+++ b/sys/kern/sysctl.c
@@ -71,6 +71,11 @@ Debug_SysCtl(int argc, const char *argv[])
 	return;
     }
 
+    if (argc != 2 && argc != 3) {
+	kprintf("Usage: sysctl NODE [VALUE]\n");
+	return;
+    }
+
     i = SysCtl_Lookup(argv[1]);
     if (i == -1) {
 	kprintf("Unknown sysctl node!\n");
@@ -98,6 +103,37 @@ Debug_SysCtl(int argc, const char *argv[])
 
 	return;
     }
+
+    if (argc == 3) {
+	if (SYSCTLTable[i].flags == SYSCTL_FLAG_RO) {
+	    kprintf("Sysctl node is read-only!\n");
+	    return;
+	}
+
+	switch (SYSCTLTable[i].type) {
+	    case SYSCTL_TYPE_STR: {
+		SysCtlString *val = (SysCtlString *)SYSCTLTable[i].node;
+		strncpy(&val->value[0], argv[2], SYSCTL_STR_MAXLENGTH);
+		break;
+	    }
+	    case SYSCTL_TYPE_INT: {
+		SysCtlInt *val = (SysCtlInt *)SYSCTLTable[i].node;
+		val->value = Debug_StrToInt(argv[2]);
+		break;
+	    }
+	    case SYSCTL_TYPE_BOOL: {
+		SysCtlBool *val = (SysCtlBool *)SYSCTLTable[i].node;
+		if (strcmp(argv[2], "0") == 0) {
+		    val->value = false;
+		} else if (strcmp(argv[2], "1") == 0) {
+		    val->value = true;
+		} else {
+		    kprintf("Invalid value!\n");
+		}
+		break;
+	    }
+	}
+    }
 }
 
 REGISTER_DBGCMD(sysctl, "SYSCTL", Debug_SysCtl);