diff --git a/include/vkd3d.h b/include/vkd3d.h
index 945fdf09..5e814217 100644
--- a/include/vkd3d.h
+++ b/include/vkd3d.h
@@ -30,7 +30,7 @@
 extern "C" {
 #endif  /* __cplusplus */
 
-typedef BOOL (WINAPI *vkd3d_signal_event_pfn)(HANDLE event);
+typedef BOOL (*vkd3d_signal_event_pfn)(HANDLE event);
 
 struct vkd3d_device_create_info
 {
@@ -38,7 +38,7 @@ struct vkd3d_device_create_info
     vkd3d_signal_event_pfn signal_event_pfn;
 };
 
-HRESULT WINAPI vkd3d_create_device(const struct vkd3d_device_create_info *create_info,
+HRESULT vkd3d_create_device(const struct vkd3d_device_create_info *create_info,
         REFIID riid, void **device);
 
 #ifdef __cplusplus
diff --git a/include/vkd3d_utils.h b/include/vkd3d_utils.h
index a1ea425c..d7112f26 100644
--- a/include/vkd3d_utils.h
+++ b/include/vkd3d_utils.h
@@ -34,10 +34,10 @@ extern "C" {
 #define WAIT_FAILED (~0u)
 #define INFINITE (~0u)
 
-HANDLE WINAPI vkd3d_create_event(void);
-BOOL WINAPI vkd3d_signal_event(HANDLE event);
-unsigned int WINAPI vkd3d_wait_event(HANDLE event, unsigned int milliseconds);
-void WINAPI vkd3d_destroy_event(HANDLE event);
+HANDLE vkd3d_create_event(void);
+BOOL vkd3d_signal_event(HANDLE event);
+unsigned int vkd3d_wait_event(HANDLE event, unsigned int milliseconds);
+void vkd3d_destroy_event(HANDLE event);
 
 #ifdef __cplusplus
 }
diff --git a/libs/vkd3d-utils/vkd3d_utils_main.c b/libs/vkd3d-utils/vkd3d_utils_main.c
index 7c9bb75a..764c633d 100644
--- a/libs/vkd3d-utils/vkd3d_utils_main.c
+++ b/libs/vkd3d-utils/vkd3d_utils_main.c
@@ -47,7 +47,7 @@ HRESULT WINAPI D3D12CreateDevice(IUnknown *adapter,
 }
 
 /* Events */
-HANDLE WINAPI vkd3d_create_event(void)
+HANDLE vkd3d_create_event(void)
 {
     struct vkd3d_event *event;
     int rc;
@@ -78,7 +78,7 @@ HANDLE WINAPI vkd3d_create_event(void)
     return event;
 }
 
-unsigned int WINAPI vkd3d_wait_event(HANDLE event, unsigned int milliseconds)
+unsigned int vkd3d_wait_event(HANDLE event, unsigned int milliseconds)
 {
     struct vkd3d_event *impl = event;
     int rc;
@@ -121,7 +121,7 @@ unsigned int WINAPI vkd3d_wait_event(HANDLE event, unsigned int milliseconds)
     return WAIT_FAILED;
 }
 
-BOOL WINAPI vkd3d_signal_event(HANDLE event)
+BOOL vkd3d_signal_event(HANDLE event)
 {
     struct vkd3d_event *impl = event;
     int rc;
@@ -140,7 +140,7 @@ BOOL WINAPI vkd3d_signal_event(HANDLE event)
     return TRUE;
 }
 
-void WINAPI vkd3d_destroy_event(HANDLE event)
+void vkd3d_destroy_event(HANDLE event)
 {
     struct vkd3d_event *impl = event;
     int rc;
diff --git a/libs/vkd3d/vkd3d_main.c b/libs/vkd3d/vkd3d_main.c
index 68d213d8..2bd243bd 100644
--- a/libs/vkd3d/vkd3d_main.c
+++ b/libs/vkd3d/vkd3d_main.c
@@ -23,7 +23,7 @@
 #define INITGUID
 #include "vkd3d_private.h"
 
-HRESULT WINAPI vkd3d_create_device(const struct vkd3d_device_create_info *create_info,
+HRESULT vkd3d_create_device(const struct vkd3d_device_create_info *create_info,
         REFIID riid, void **device)
 {
     struct d3d12_device *object;