diff --git a/dlls/msvcp90/msvcp90.spec b/dlls/msvcp90/msvcp90.spec
index 850561483a..d7f368aa13 100644
--- a/dlls/msvcp90/msvcp90.spec
+++ b/dlls/msvcp90/msvcp90.spec
@@ -1380,8 +1380,8 @@
 @ cdecl -arch=win64 ??4?$allocator@X@std@@QEAAAEAV01@AEBV01@@Z(ptr ptr) MSVCP_allocator_void_assign
 @ thiscall -arch=win32 ??4?$allocator@_W@std@@QAEAAV01@ABV01@@Z(ptr ptr) MSVCP_allocator_wchar_assign
 @ cdecl -arch=win64 ??4?$allocator@_W@std@@QEAAAEAV01@AEBV01@@Z(ptr ptr) MSVCP_allocator_wchar_assign
-@ stub -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@ABV01@@Z
-@ stub -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@AEBV01@@Z
+@ thiscall -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@ABV01@@Z(ptr ptr) MSVCP_basic_string_char_assign
+@ cdecl -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@AEBV01@@Z(ptr ptr) MSVCP_basic_string_char_assign
 @ stub -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@D@Z
 @ stub -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@D@Z
 @ stub -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@PBD@Z
@@ -1392,8 +1392,8 @@
 @ stub -arch=win64 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAAEAV01@G@Z
 @ stub -arch=win32 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEAAV01@PBG@Z
 @ stub -arch=win64 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAAEAV01@PEBG@Z
-@ stub -arch=win32 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV01@ABV01@@Z
-@ stub -arch=win64 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QEAAAEAV01@AEBV01@@Z
+@ thiscall -arch=win32 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV01@ABV01@@Z(ptr ptr) MSVCP_basic_string_char_assign
+@ cdecl -arch=win64 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QEAAAEAV01@AEBV01@@Z(ptr ptr) MSVCP_basic_string_char_assign
 @ stub -arch=win32 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV01@PB_W@Z
 @ stub -arch=win64 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QEAAAEAV01@PEB_W@Z
 @ stub -arch=win32 ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV01@_W@Z
diff --git a/dlls/msvcp90/string.c b/dlls/msvcp90/string.c
index 291d158a77..fad3346fdb 100644
--- a/dlls/msvcp90/string.c
+++ b/dlls/msvcp90/string.c
@@ -647,6 +647,8 @@ basic_string_char* __thiscall MSVCP_basic_string_char_assign_substr(
 
 /* ?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@ABV12@@Z */
 /* ?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV12@AEBV12@@Z */
+/* ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@ABV01@@Z */
+/* ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@AEBV01@@Z */
 DEFINE_THISCALL_WRAPPER(MSVCP_basic_string_char_assign, 8)
 basic_string_char* __thiscall MSVCP_basic_string_char_assign(
         basic_string_char *this, const basic_string_char *assign)
@@ -906,6 +908,8 @@ basic_string_wchar* __thiscall MSVCP_basic_string_wchar_assign_substr(
 
 /* ?assign@?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV12@ABV12@@Z */
 /* ?assign@?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QEAAAEAV12@AEBV12@@Z */
+/* ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QAEAAV01@ABV01@@Z */
+/* ??4?$basic_string@_WU?$char_traits@_W@std@@V?$allocator@_W@2@@std@@QEAAAEAV01@AEBV01@@Z */
 DEFINE_THISCALL_WRAPPER(MSVCP_basic_string_wchar_assign, 8)
 basic_string_wchar* __thiscall MSVCP_basic_string_wchar_assign(
             basic_string_wchar *this, const basic_string_wchar *assign)