diff --git a/common/Pcsx2Defs.h b/common/Pcsx2Defs.h
index 4044da72cc..5b0e765140 100644
--- a/common/Pcsx2Defs.h
+++ b/common/Pcsx2Defs.h
@@ -110,11 +110,7 @@ static const int __pagesize = PCSX2_PAGESIZE;
 	// happens *by design* like all the friggen time >_<)
 
 	#ifndef __fastcall
-		#ifndef _M_X86_32
-			#define __fastcall // Attribute not available, and x86_32 is pretty much the only cc that passes literally everything in registers
-		#else
-			#define __fastcall __attribute__((fastcall))
-		#endif
+		#define __fastcall
 	#endif
 	#define __vectorcall __fastcall
 	#define _inline __inline__ __attribute__((unused))
diff --git a/tests/ctest/CMakeLists.txt b/tests/ctest/CMakeLists.txt
index 30f5a09429..f143442722 100644
--- a/tests/ctest/CMakeLists.txt
+++ b/tests/ctest/CMakeLists.txt
@@ -42,9 +42,6 @@ else()
 	set(CMAKE_CROSSCOMPILING ${cc_backup})
 endif()
 if (MSVC)
-	if(_M_X86_32)
-		set(compile_options_sse4 /arch:SSE2)
-	endif()
 	set(compile_options_avx  /arch:AVX)
 	set(compile_options_avx2 /arch:AVX2)
 	set(definitions_sse4 _M_SSE=0x401)