diff --git a/build/make/gen_msvs_proj.sh b/build/make/gen_msvs_proj.sh
index 3653309ed7ca6203cb1c8bb1d505c4ffa19464e5..79072259349e0a959b6460d6248fb4fe405ee849 100755
--- a/build/make/gen_msvs_proj.sh
+++ b/build/make/gen_msvs_proj.sh
@@ -245,13 +245,13 @@ esac
 case "$target" in
     x86_64*)
         platforms[0]="x64"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f \$(PlatformName) ${yasmincs} "\$(InputPath)""
-        asm_Release_cmdline="yasm -Xvc -f \$(PlatformName) ${yasmincs} "\$(InputPath)""
+        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win64 ${yasmincs} "\$(InputPath)""
+        asm_Release_cmdline="yasm -Xvc -f win64 ${yasmincs} "\$(InputPath)""
     ;;
     x86*)
         platforms[0]="Win32"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f \$(PlatformName) ${yasmincs} "\$(InputPath)""
-        asm_Release_cmdline="yasm -Xvc -f \$(PlatformName) ${yasmincs} "\$(InputPath)""
+        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win32 ${yasmincs} "\$(InputPath)""
+        asm_Release_cmdline="yasm -Xvc -f win32 ${yasmincs} "\$(InputPath)""
     ;;
     *) die "Unsupported target $target!"
     ;;
diff --git a/build/make/gen_msvs_vcxproj.sh b/build/make/gen_msvs_vcxproj.sh
index 23ef6a320a81349156afe4205145489b8035e03e..56b9a3b50b4442eda60eadea76a4109f59f30690 100755
--- a/build/make/gen_msvs_vcxproj.sh
+++ b/build/make/gen_msvs_vcxproj.sh
@@ -253,13 +253,13 @@ libs=${libs// /;}
 case "$target" in
     x86_64*)
         platforms[0]="x64"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f \$(PlatformName) ${yasmincs} "%(FullPath)""
-        asm_Release_cmdline="yasm -Xvc -f \$(PlatformName) ${yasmincs} "%(FullPath)""
+        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win64 ${yasmincs} "%(FullPath)""
+        asm_Release_cmdline="yasm -Xvc -f win64 ${yasmincs} "%(FullPath)""
     ;;
     x86*)
         platforms[0]="Win32"
-        asm_Debug_cmdline="yasm -Xvc -g cv8 -f \$(PlatformName) ${yasmincs} "%(FullPath)""
-        asm_Release_cmdline="yasm -Xvc -f \$(PlatformName) ${yasmincs} "%(FullPath)""
+        asm_Debug_cmdline="yasm -Xvc -g cv8 -f win32 ${yasmincs} "%(FullPath)""
+        asm_Release_cmdline="yasm -Xvc -f win32 ${yasmincs} "%(FullPath)""
     ;;
     arm*)
         asm_Debug_cmdline="armasm -nologo "%(FullPath)""