diff --git a/boards/frdm-k64f/include/periph_conf.h b/boards/frdm-k64f/include/periph_conf.h
index 20dba2bcee..f0f57c38c6 100644
--- a/boards/frdm-k64f/include/periph_conf.h
+++ b/boards/frdm-k64f/include/periph_conf.h
@@ -242,6 +242,8 @@ static const i2c_conf_t i2c_config[] = {
     },
 };
 #define I2C_NUMOF           (sizeof(i2c_config) / sizeof(i2c_config[0]))
+#define I2C_0_ISR           (isr_i2c0)
+#define I2C_1_ISR           (isr_i2c1)
 /** @} */
 
 #ifdef __cplusplus