diff --git a/include/libopencm3/stm32/common/adc_common_v1_multi.h b/include/libopencm3/stm32/common/adc_common_v1_multi.h
index 3feee038..190b00ee 100644
--- a/include/libopencm3/stm32/common/adc_common_v1_multi.h
+++ b/include/libopencm3/stm32/common/adc_common_v1_multi.h
@@ -38,8 +38,8 @@ specific memorymap.h header before including this header file.*/
 /** @cond */
 #ifdef LIBOPENCM3_ADC_H
 /** @endcond */
-#ifndef LIBOPENCM3_ADC_COMMON_V3_H
-#define LIBOPENCM3_ADC_COMMON_V3_H
+#ifndef LIBOPENCM3_ADC_COMMON_V1_MULTI_H
+#define LIBOPENCM3_ADC_COMMON_V1_MULTI_H
 
 #include <libopencm3/stm32/common/adc_common_v1.h>