diff --git a/os/hal/include/icu.h b/os/hal/include/icu.h
index 1f4e58ece..f13349760 100644
--- a/os/hal/include/icu.h
+++ b/os/hal/include/icu.h
@@ -72,7 +72,7 @@ typedef enum {
  *
  * @iclass
  */
-void icuEnableI(icup) icu_lld_enable(icup)
+#define icuEnableI(icup) icu_lld_enable(icup)
 
 /**
  * @brief   Disables the input capture.
@@ -81,7 +81,7 @@ void icuEnableI(icup) icu_lld_enable(icup)
  *
  * @iclass
  */
-void icuDisableI(ICUDriver *icup) icu_lld_disable(icup)
+#define icuDisableI(icup) icu_lld_disable(icup)
 
 /**
  * @brief   Returns the width of the latest pulse.
diff --git a/os/hal/templates/icu_lld.c b/os/hal/templates/icu_lld.c
index 3611c1baa..23596bc97 100644
--- a/os/hal/templates/icu_lld.c
+++ b/os/hal/templates/icu_lld.c
@@ -122,7 +122,7 @@ void icu_lld_disable(ICUDriver *icup) {
  *
  * @notapi
  */
-icucnt_t icu_lld_get_width(icup) {
+icucnt_t icu_lld_get_width(ICUDriver *icup) {
 
 }
 
@@ -136,7 +136,7 @@ icucnt_t icu_lld_get_width(icup) {
  *
  * @notapi
  */
-icucnt_t icu_lld_get_period(icup) {
+icucnt_t icu_lld_get_period(ICUDriver *icup) {
 
 }