diff --git a/drivers/interrupt_controller/exti_stm32.c b/drivers/interrupt_controller/exti_stm32.c
index 611f522ebefac1..14ad11328c1c9e 100644
--- a/drivers/interrupt_controller/exti_stm32.c
+++ b/drivers/interrupt_controller/exti_stm32.c
@@ -41,6 +41,8 @@
 #define EXTI_LINES 24
 #elif defined(CONFIG_SOC_SERIES_STM32L0X)
 #define EXTI_LINES 30
+#elif defined(CONFIG_SOC_SERIES_STM32L1X)
+#define EXTI_LINES 24
 #elif defined(CONFIG_SOC_SERIES_STM32L4X)
 #define EXTI_LINES 40
 #elif defined(CONFIG_SOC_SERIES_STM32MP1X)
@@ -127,6 +129,7 @@ int stm32_exti_enable(int line)
       defined(CONFIG_SOC_SERIES_STM32F3X) || \
       defined(CONFIG_SOC_SERIES_STM32F4X) || \
       defined(CONFIG_SOC_SERIES_STM32F7X) || \
+      defined(CONFIG_SOC_SERIES_STM32L1X) || \
       defined(CONFIG_SOC_SERIES_STM32L4X) || \
       defined(CONFIG_SOC_SERIES_STM32WBX)
 	if (line >= 5 && line <= 9) {
@@ -585,6 +588,7 @@ static void __stm32_exti_connect_irqs(struct device *dev)
       defined(CONFIG_SOC_SERIES_STM32F3X) || \
       defined(CONFIG_SOC_SERIES_STM32F4X) || \
       defined(CONFIG_SOC_SERIES_STM32F7X) || \
+      defined(CONFIG_SOC_SERIES_STM32L1X) || \
       defined(CONFIG_SOC_SERIES_STM32L4X) || \
       defined(CONFIG_SOC_SERIES_STM32MP1X) || \
       defined(CONFIG_SOC_SERIES_STM32WBX)
diff --git a/soc/arm/st_stm32/stm32l1/soc.h b/soc/arm/st_stm32/stm32l1/soc.h
index bf677dd02b11b8..40a5c39128c033 100644
--- a/soc/arm/st_stm32/stm32l1/soc.h
+++ b/soc/arm/st_stm32/stm32l1/soc.h
@@ -43,6 +43,10 @@
 #include <stm32l1xx_ll_gpio.h>
 #endif
 
+#ifdef CONFIG_EXTI_STM32
+#include <stm32l1xx_ll_exti.h>
+#endif
+
 #endif /* !_ASMLANGUAGE */
 
 #endif /* _STM32L1_SOC_H_ */