diff --git a/dlls/msvcp80/msvcp80.spec b/dlls/msvcp80/msvcp80.spec
index eda3b7cef66..f05b53d159d 100644
--- a/dlls/msvcp80/msvcp80.spec
+++ b/dlls/msvcp80/msvcp80.spec
@@ -1382,8 +1382,8 @@
 @ stub -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@AEBV01@@Z
 @ stub -arch=win32 ??4?$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
-@ stub -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z
+@ thiscall -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@PBD@Z(ptr ptr) msvcp90.??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@PBD@Z
+@ cdecl -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z(ptr ptr) msvcp90.??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z
 @ stub -arch=win32 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEAAV01@ABV01@@Z
 @ stub -arch=win64 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAAEAV01@AEBV01@@Z
 @ stub -arch=win32 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEAAV01@G@Z
diff --git a/dlls/msvcp90/msvcp90.spec b/dlls/msvcp90/msvcp90.spec
index d7f368aa134..9ed37ec717a 100644
--- a/dlls/msvcp90/msvcp90.spec
+++ b/dlls/msvcp90/msvcp90.spec
@@ -1384,8 +1384,8 @@
 @ 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
-@ stub -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z
+@ thiscall -arch=win32 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@PBD@Z(ptr ptr) MSVCP_basic_string_char_assign_cstr
+@ cdecl -arch=win64 ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z(ptr ptr) MSVCP_basic_string_char_assign_cstr
 @ stub -arch=win32 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEAAV01@ABV01@@Z
 @ stub -arch=win64 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QEAAAEAV01@AEBV01@@Z
 @ stub -arch=win32 ??4?$basic_string@GU?$char_traits@G@std@@V?$allocator@G@2@@std@@QAEAAV01@G@Z
diff --git a/dlls/msvcp90/string.c b/dlls/msvcp90/string.c
index fad3346fdbe..cc4ff1b9cd2 100644
--- a/dlls/msvcp90/string.c
+++ b/dlls/msvcp90/string.c
@@ -679,6 +679,8 @@ basic_string_char* __thiscall MSVCP_basic_string_char_assign_cstr_len(
 
 /* ?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@PBD@Z */
 /* ?assign@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV12@PEBD@Z */
+/* ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@PBD@Z */
+/* ??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QEAAAEAV01@PEBD@Z */
 DEFINE_THISCALL_WRAPPER(MSVCP_basic_string_char_assign_cstr, 8)
 basic_string_char* __thiscall MSVCP_basic_string_char_assign_cstr(
         basic_string_char *this, const char *str)