diff --git a/dlls/api-ms-win-core-libraryloader-l1-1-0/api-ms-win-core-libraryloader-l1-1-0.spec b/dlls/api-ms-win-core-libraryloader-l1-1-0/api-ms-win-core-libraryloader-l1-1-0.spec
index 6c385b61652..f32206571d5 100644
--- a/dlls/api-ms-win-core-libraryloader-l1-1-0/api-ms-win-core-libraryloader-l1-1-0.spec
+++ b/dlls/api-ms-win-core-libraryloader-l1-1-0/api-ms-win-core-libraryloader-l1-1-0.spec
@@ -25,5 +25,5 @@
 @ stdcall LoadStringW(long long ptr long) user32.LoadStringW
 @ stdcall LockResource(long) kernel32.LockResource
 @ stub RemoveDllDirectory
-@ stub SetDefaultDllDirectories
+@ stdcall SetDefaultDllDirectories(long) kernel32.SetDefaultDllDirectories
 @ stdcall SizeofResource(long long) kernel32.SizeofResource
diff --git a/dlls/api-ms-win-core-libraryloader-l1-1-1/api-ms-win-core-libraryloader-l1-1-1.spec b/dlls/api-ms-win-core-libraryloader-l1-1-1/api-ms-win-core-libraryloader-l1-1-1.spec
index afd1407276a..ba386a0af49 100644
--- a/dlls/api-ms-win-core-libraryloader-l1-1-1/api-ms-win-core-libraryloader-l1-1-1.spec
+++ b/dlls/api-ms-win-core-libraryloader-l1-1-1/api-ms-win-core-libraryloader-l1-1-1.spec
@@ -26,5 +26,5 @@
 @ stdcall LockResource(long) kernel32.LockResource
 @ stub QueryOptionalDelayLoadedAPI
 @ stub RemoveDllDirectory
-@ stub SetDefaultDllDirectories
+@ stdcall SetDefaultDllDirectories(long) kernel32.SetDefaultDllDirectories
 @ stdcall SizeofResource(long long) kernel32.SizeofResource
diff --git a/dlls/api-ms-win-core-libraryloader-l1-2-0/api-ms-win-core-libraryloader-l1-2-0.spec b/dlls/api-ms-win-core-libraryloader-l1-2-0/api-ms-win-core-libraryloader-l1-2-0.spec
index 6c385b61652..f32206571d5 100644
--- a/dlls/api-ms-win-core-libraryloader-l1-2-0/api-ms-win-core-libraryloader-l1-2-0.spec
+++ b/dlls/api-ms-win-core-libraryloader-l1-2-0/api-ms-win-core-libraryloader-l1-2-0.spec
@@ -25,5 +25,5 @@
 @ stdcall LoadStringW(long long ptr long) user32.LoadStringW
 @ stdcall LockResource(long) kernel32.LockResource
 @ stub RemoveDllDirectory
-@ stub SetDefaultDllDirectories
+@ stdcall SetDefaultDllDirectories(long) kernel32.SetDefaultDllDirectories
 @ stdcall SizeofResource(long long) kernel32.SizeofResource
diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index 2d82c71eabf..3c25286d268 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -1375,7 +1375,7 @@
 @ stub SetDaylightFlag
 @ stdcall SetDefaultCommConfigA(str ptr long)
 @ stdcall SetDefaultCommConfigW(wstr ptr long)
-# @ stub SetDefaultDllDirectories
+@ stdcall SetDefaultDllDirectories(long)
 @ stdcall SetDllDirectoryA(str)
 @ stdcall SetDllDirectoryW(wstr)
 # @ stub SetDynamicTimeZoneInformation
diff --git a/dlls/kernel32/path.c b/dlls/kernel32/path.c
index eadd2e79b58..c746693a759 100644
--- a/dlls/kernel32/path.c
+++ b/dlls/kernel32/path.c
@@ -2072,9 +2072,22 @@ BOOL WINAPI CheckNameLegalDOS8Dot3W(const WCHAR *name, char *oemname, DWORD oemn
     return TRUE;
 }
 
+/*************************************************************************
+ *           SetSearchPathMode   (KERNEL32.@)
+ */
 BOOL WINAPI SetSearchPathMode(DWORD flags)
 {
     FIXME("(%x): stub\n", flags);
     SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
     return FALSE;
 }
+
+/*************************************************************************
+ *           SetDefaultDllDirectories   (KERNEL32.@)
+ */
+BOOL WINAPI SetDefaultDllDirectories(DWORD flags)
+{
+    FIXME("(%x): stub\n", flags);
+    SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
+    return FALSE;
+}
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index de9404c88ce..a7aecffb967 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -506,7 +506,7 @@
 @ stdcall SetCriticalSectionSpinCount(ptr long) kernel32.SetCriticalSectionSpinCount
 @ stdcall SetCurrentDirectoryA(str) kernel32.SetCurrentDirectoryA
 @ stdcall SetCurrentDirectoryW(wstr) kernel32.SetCurrentDirectoryW
-@ stub SetDefaultDllDirectories
+@ stdcall SetDefaultDllDirectories(long) kernel32.SetDefaultDllDirectories
 @ stdcall SetEndOfFile(long) kernel32.SetEndOfFile
 @ stub SetEnvironmentStringsW
 @ stdcall SetEnvironmentVariableA(str str) kernel32.SetEnvironmentVariableA