diff --git a/dlls/api-ms-win-appmodel-runtime-l1-1-1/api-ms-win-appmodel-runtime-l1-1-1.spec b/dlls/api-ms-win-appmodel-runtime-l1-1-1/api-ms-win-appmodel-runtime-l1-1-1.spec
index 50f8594785f..4d2edd60f5a 100644
--- a/dlls/api-ms-win-appmodel-runtime-l1-1-1/api-ms-win-appmodel-runtime-l1-1-1.spec
+++ b/dlls/api-ms-win-appmodel-runtime-l1-1-1/api-ms-win-appmodel-runtime-l1-1-1.spec
@@ -10,7 +10,7 @@
 @ stub GetCurrentPackagePath
 @ stub GetPackageApplicationIds
 @ stub GetPackageFamilyName
-@ stub GetPackageFullName
+@ stdcall GetPackageFullName(long ptr ptr) kernel32.GetPackageFullName
 @ stub GetPackageId
 @ stub GetPackageInfo
 @ stub GetPackagePath
diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index 31ce4565b9e..5ef7cb81729 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -761,6 +761,7 @@
 @ stdcall GetOEMCP()
 @ stdcall GetOverlappedResult(long ptr ptr long)
 @ stdcall GetUserPreferredUILanguages(long ptr ptr ptr)
+@ stdcall GetPackageFullName(long ptr ptr)
 @ stdcall GetPhysicallyInstalledSystemMemory(ptr)
 @ stdcall GetPriorityClass(long)
 @ stdcall GetPrivateProfileIntA(str str long str)
diff --git a/dlls/kernel32/version.c b/dlls/kernel32/version.c
index 5a233efe56f..3cca2ae68ee 100644
--- a/dlls/kernel32/version.c
+++ b/dlls/kernel32/version.c
@@ -228,3 +228,12 @@ LONG WINAPI GetCurrentPackageFullName(UINT32 *length, PWSTR name)
     FIXME("(%p %p): stub\n", length, name);
     return APPMODEL_ERROR_NO_PACKAGE;
 }
+
+/***********************************************************************
+ *           GetPackageFullName       (KERNEL32.@)
+ */
+LONG WINAPI GetPackageFullName(HANDLE process, UINT32 *length, PWSTR name)
+{
+    FIXME("(%p %p %p): stub\n", process, length, name);
+    return APPMODEL_ERROR_NO_PACKAGE;
+}
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index cf6ceef62b3..689d58739e6 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -593,7 +593,7 @@
 # @ stub GetPackageContext
 # @ stub GetPackageFamilyName
 # @ stub GetPackageFamilyNameFromToken
-# @ stub GetPackageFullName
+@ stdcall GetPackageFullName(long ptr ptr) kernel32.GetPackageFullName
 # @ stub GetPackageFullNameFromToken
 # @ stub GetPackageId
 # @ stub GetPackageInfo