diff --git a/plugins/win-capture/graphics-hook-info.h b/plugins/win-capture/graphics-hook-info.h
index f90b2080d..abaf40861 100644
--- a/plugins/win-capture/graphics-hook-info.h
+++ b/plugins/win-capture/graphics-hook-info.h
@@ -7,21 +7,21 @@
 
 #include "hook-helpers.h"
 
-#define EVENT_CAPTURE_RESTART "CaptureHook_Restart"
-#define EVENT_CAPTURE_STOP    "CaptureHook_Stop"
+#define EVENT_CAPTURE_RESTART L"CaptureHook_Restart"
+#define EVENT_CAPTURE_STOP    L"CaptureHook_Stop"
 
-#define EVENT_HOOK_READY      "CaptureHook_HookReady"
-#define EVENT_HOOK_EXIT       "CaptureHook_Exit"
+#define EVENT_HOOK_READY      L"CaptureHook_HookReady"
+#define EVENT_HOOK_EXIT       L"CaptureHook_Exit"
 
-#define EVENT_HOOK_INIT       "CaptureHook_Initialize"
+#define EVENT_HOOK_INIT       L"CaptureHook_Initialize"
 
 #define WINDOW_HOOK_KEEPALIVE L"CaptureHook_KeepAlive"
 
-#define MUTEX_TEXTURE1        "CaptureHook_TextureMutex1"
-#define MUTEX_TEXTURE2        "CaptureHook_TextureMutex2"
+#define MUTEX_TEXTURE1        L"CaptureHook_TextureMutex1"
+#define MUTEX_TEXTURE2        L"CaptureHook_TextureMutex2"
 
-#define SHMEM_HOOK_INFO       "CaptureHook_HookInfo"
-#define SHMEM_TEXTURE         "CaptureHook_Texture"
+#define SHMEM_HOOK_INFO       L"CaptureHook_HookInfo"
+#define SHMEM_TEXTURE         L"CaptureHook_Texture"
 
 #define PIPE_NAME             "CaptureHook_Pipe"
 
@@ -107,17 +107,17 @@ struct hook_info {
 
 static inline HANDLE create_hook_info(DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", SHMEM_HOOK_INFO, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", SHMEM_HOOK_INFO, id);
 
-	return CreateFileMappingA(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
+	return CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
 			0, sizeof(struct hook_info), new_name);
 }
 
 static inline HANDLE open_hook_info(DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", SHMEM_HOOK_INFO, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", SHMEM_HOOK_INFO, id);
 
-	return OpenFileMappingA(GC_MAPPING_FLAGS, false, new_name);
+	return OpenFileMappingW(GC_MAPPING_FLAGS, false, new_name);
 }
diff --git a/plugins/win-capture/graphics-hook/graphics-hook.c b/plugins/win-capture/graphics-hook/graphics-hook.c
index 8a642b0bf..4c8ebd1da 100644
--- a/plugins/win-capture/graphics-hook/graphics-hook.c
+++ b/plugins/win-capture/graphics-hook/graphics-hook.c
@@ -74,7 +74,7 @@ bool init_pipe(void)
 	return true;
 }
 
-static HANDLE init_event(const char *name, DWORD pid)
+static HANDLE init_event(const wchar_t *name, DWORD pid)
 {
 	HANDLE handle = create_event_plus_id(name, pid);
 	if (!handle)
@@ -82,7 +82,7 @@ static HANDLE init_event(const char *name, DWORD pid)
 	return handle;
 }
 
-static HANDLE init_mutex(const char *name, DWORD pid)
+static HANDLE init_mutex(const wchar_t *name, DWORD pid)
 {
 	HANDLE handle = create_mutex_plus_id(name, pid);
 	if (!handle)
@@ -484,10 +484,10 @@ static inline void unlock_shmem_tex(int id)
 
 static inline bool init_shared_info(size_t size)
 {
-	char name[64];
-	sprintf_s(name, 64, "%s%u", SHMEM_TEXTURE, ++shmem_id_counter);
+	wchar_t name[64];
+	_snwprintf(name, 64, L"%s%ld", SHMEM_TEXTURE, ++shmem_id_counter);
 
-	shmem_file_handle = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL,
+	shmem_file_handle = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
 			PAGE_READWRITE, 0, (DWORD)size, name);
 	if (!shmem_file_handle) {
 		hlog("init_shared_info: Failed to create shared memory: %d",
diff --git a/plugins/win-capture/hook-helpers.h b/plugins/win-capture/hook-helpers.h
index 1e80a49bc..395f7d948 100644
--- a/plugins/win-capture/hook-helpers.h
+++ b/plugins/win-capture/hook-helpers.h
@@ -7,51 +7,51 @@
 #define GC_EVENT_FLAGS (EVENT_MODIFY_STATE | SYNCHRONIZE)
 #define GC_MUTEX_FLAGS (SYNCHRONIZE)
 
-static inline HANDLE create_event(const char *name)
+static inline HANDLE create_event(const wchar_t *name)
 {
-	return CreateEventA(NULL, false, false, name);
+	return CreateEventW(NULL, false, false, name);
 }
 
-static inline HANDLE open_event(const char *name)
+static inline HANDLE open_event(const wchar_t *name)
 {
-	return OpenEventA(GC_EVENT_FLAGS, false, name);
+	return OpenEventW(GC_EVENT_FLAGS, false, name);
 }
 
-static inline HANDLE create_mutex(const char *name)
+static inline HANDLE create_mutex(const wchar_t *name)
 {
-	return CreateMutexA(NULL, false, name);
+	return CreateMutexW(NULL, false, name);
 }
 
-static inline HANDLE open_mutex(const char *name)
+static inline HANDLE open_mutex(const wchar_t *name)
 {
-	return OpenMutexA(GC_MUTEX_FLAGS, false, name);
+	return OpenMutexW(GC_MUTEX_FLAGS, false, name);
 }
 
-static inline HANDLE create_event_plus_id(const char *name, DWORD id)
+static inline HANDLE create_event_plus_id(const wchar_t *name, DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", name, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", name, id);
 	return create_event(new_name);
 }
 
-static inline HANDLE open_event_plus_id(const char *name, DWORD id)
+static inline HANDLE open_event_plus_id(const wchar_t *name, DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", name, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", name, id);
 	return open_event(new_name);
 }
 
-static inline HANDLE create_mutex_plus_id(const char *name, DWORD id)
+static inline HANDLE create_mutex_plus_id(const wchar_t *name, DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", name, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", name, id);
 	return create_mutex(new_name);
 }
 
-static inline HANDLE open_mutex_plus_id(const char *name, DWORD id)
+static inline HANDLE open_mutex_plus_id(const wchar_t *name, DWORD id)
 {
-	char new_name[64];
-	sprintf(new_name, "%s%lu", name, id);
+	wchar_t new_name[64];
+	_snwprintf(new_name, 64, L"%s%lu", name, id);
 	return open_mutex(new_name);
 }