diff --git a/dlls/msi/msi.spec b/dlls/msi/msi.spec
index 6b95de654cb..19ab35ed595 100644
--- a/dlls/msi/msi.spec
+++ b/dlls/msi/msi.spec
@@ -148,9 +148,9 @@
 148 stdcall MsiSummaryInfoGetPropertyA(long long ptr ptr ptr ptr ptr)
 149 stdcall MsiSummaryInfoGetPropertyCount(long ptr)
 150 stdcall MsiSummaryInfoGetPropertyW(long long ptr ptr ptr ptr ptr)
-151 stub MsiSummaryInfoPersist
-152 stub MsiSummaryInfoSetPropertyA
-153 stub MsiSummaryInfoSetPropertyW
+151 stdcall MsiSummaryInfoPersist(long)
+152 stdcall MsiSummaryInfoSetPropertyA(long long long long ptr str)
+153 stdcall MsiSummaryInfoSetPropertyW(long long long long ptr wstr)
 154 stub MsiUseFeatureA
 155 stub MsiUseFeatureW
 156 stdcall MsiVerifyPackageA(str)
diff --git a/dlls/msi/suminfo.c b/dlls/msi/suminfo.c
index 1ae082afbe6..62401d95b0d 100644
--- a/dlls/msi/suminfo.c
+++ b/dlls/msi/suminfo.c
@@ -272,3 +272,22 @@ UINT WINAPI MsiSummaryInfoGetPropertyW(
 
     return ERROR_SUCCESS;
 }
+
+UINT WINAPI MsiSummaryInfoSetPropertyA( MSIHANDLE hSummaryInfo, UINT uiProperty,
+                                       UINT uiDataType, INT iValue, 
+                                       FILETIME* pftValue, LPSTR szValue)
+{
+    return ERROR_CALL_NOT_IMPLEMENTED;
+}
+
+UINT WINAPI MsiSummaryInfoSetPropertyW( MSIHANDLE hSummaryInfo, UINT uiProperty,
+                                       UINT uiDataType, INT iValue, 
+                                       FILETIME* pftValue, LPWSTR szValue)
+{
+    return ERROR_CALL_NOT_IMPLEMENTED;
+}
+
+UINT WINAPI MsiSummaryInfoPersist(MSIHANDLE hSummaryInfo)
+{
+    return ERROR_CALL_NOT_IMPLEMENTED;
+}
diff --git a/include/msi.h b/include/msi.h
index 0c8aa57dc76..b2f29c88ed2 100644
--- a/include/msi.h
+++ b/include/msi.h
@@ -209,6 +209,12 @@ UINT WINAPI MsiSummaryInfoGetPropertyA(MSIHANDLE,UINT,UINT*,INT*,FILETIME*,LPSTR
 UINT WINAPI MsiSummaryInfoGetPropertyW(MSIHANDLE,UINT,UINT*,INT*,FILETIME*,LPWSTR,DWORD*);
 #define     MsiSummaryInfoGetProperty WINELIB_NAME_AW(MsiSummaryInfoGetProperty)
 
+UINT WINAPI MsiSummaryInfoPersist(MSIHANDLE);
+
+UINT WINAPI MsiSummaryInfoSetPropertyA(MSIHANDLE, UINT, UINT, INT, FILETIME*, LPSTR);
+UINT WINAPI MsiSummaryInfoSetPropertyW(MSIHANDLE, UINT, UINT, INT, FILETIME*, LPWSTR);
+#define     MsiSummaryInfoSetProperty WINELIB_NAME_AW(MsiSummaryInfoSetProperty)
+
 UINT WINAPI MsiProvideComponentFromDescriptorA(LPCSTR,LPSTR,DWORD*,DWORD*);
 UINT WINAPI MsiProvideComponentFromDescriptorW(LPCWSTR,LPWSTR,DWORD*,DWORD*);
 #define     MsiProvideComponentFromDescriptor WINELIB_NAME_AW(MsiProvideComponentFromDescriptor)