diff --git a/cpu/mcf547x_8x/speed.c b/cpu/mcf547x_8x/speed.c
index 389e7c9..28fe657 100644
--- a/cpu/mcf547x_8x/speed.c
+++ b/cpu/mcf547x_8x/speed.c
@@ -39,5 +39,10 @@
 
 	gd->bus_clk = CFG_CLK;
 	gd->cpu_clk = (gd->bus_clk * 2);
+
+#ifdef CONFIG_FSL_I2C
+	gd->i2c1_clk = gd->bus_clk;
+#endif
+
 	return (0);
 }