diff --git a/Engine/source/math/mMathSSE.cpp b/Engine/source/math/mMathSSE.cpp
index 28194c51f..51fcc8a0c 100644
--- a/Engine/source/math/mMathSSE.cpp
+++ b/Engine/source/math/mMathSSE.cpp
@@ -203,7 +203,7 @@ extern "C"
    void SSE_MatrixF_x_MatrixF_Aligned(const F32 *matA, const F32 *matB, F32 *result);
 }
 
-#elif defined( TORQUE_COMPILER_GCC ) && defined( TORQUE_CPU_X86 )
+#elif defined( TORQUE_COMPILER_GCC ) && (defined( TORQUE_CPU_X86 ) || defined( TORQUE_CPU_X64 ))
 #define ADD_SSE_FN
 
 void SSE_MatrixF_x_MatrixF(const F32 *matA, const F32 *matB, F32 *result)
diff --git a/Engine/source/ts/arch/tsMeshIntrinsics.arch.h b/Engine/source/ts/arch/tsMeshIntrinsics.arch.h
index f6fe7b2c7..f859d51ac 100644
--- a/Engine/source/ts/arch/tsMeshIntrinsics.arch.h
+++ b/Engine/source/ts/arch/tsMeshIntrinsics.arch.h
@@ -23,7 +23,7 @@
 #ifndef _TSMESHINTRINSICS_ARCH_H_
 #define _TSMESHINTRINSICS_ARCH_H_
 
-#if defined(TORQUE_CPU_X86)
+#if (defined( TORQUE_CPU_X86 ) || defined( TORQUE_CPU_X64 )) 
 # // x86 CPU family implementations
 extern void zero_vert_normal_bulk_SSE(const dsize_t count, U8 * __restrict const outPtr, const dsize_t outStride);
 #
diff --git a/Engine/source/ts/arch/tsMeshIntrinsics.sse.cpp b/Engine/source/ts/arch/tsMeshIntrinsics.sse.cpp
index 0a68353c4..bfe5c3cff 100644
--- a/Engine/source/ts/arch/tsMeshIntrinsics.sse.cpp
+++ b/Engine/source/ts/arch/tsMeshIntrinsics.sse.cpp
@@ -21,7 +21,7 @@
 //-----------------------------------------------------------------------------
 #include "ts/tsMesh.h"
 
-#if defined(TORQUE_CPU_X86)
+#if (defined( TORQUE_CPU_X86 ) || defined( TORQUE_CPU_X64 ))
 #include "ts/tsMeshIntrinsics.h"
 #include <xmmintrin.h>
 
diff --git a/Engine/source/ts/arch/tsMeshIntrinsics.sse4.cpp b/Engine/source/ts/arch/tsMeshIntrinsics.sse4.cpp
index 76dac3fd2..5757a6d62 100644
--- a/Engine/source/ts/arch/tsMeshIntrinsics.sse4.cpp
+++ b/Engine/source/ts/arch/tsMeshIntrinsics.sse4.cpp
@@ -21,7 +21,7 @@
 //-----------------------------------------------------------------------------
 #include "ts/tsMesh.h"
 
-#if defined(TORQUE_CPU_X86) && (_MSC_VER >= 1500)
+#if (defined(TORQUE_CPU_X86)  || defined( TORQUE_CPU_X64 )) && (_MSC_VER >= 1500)
 #include "ts/tsMeshIntrinsics.h"
 #include <smmintrin.h>
 
diff --git a/Engine/source/ts/tsMeshIntrinsics.cpp b/Engine/source/ts/tsMeshIntrinsics.cpp
index e11035dc7..a7d2011bb 100644
--- a/Engine/source/ts/tsMeshIntrinsics.cpp
+++ b/Engine/source/ts/tsMeshIntrinsics.cpp
@@ -65,7 +65,7 @@ MODULE_BEGIN( TSMeshIntrinsics )
       // Find the best implementation for the current CPU
       if(Platform::SystemInfo.processor.properties & CPU_PROP_SSE)
       {
-   #if defined(TORQUE_CPU_X86)
+   #if (defined( TORQUE_CPU_X86 ) || defined( TORQUE_CPU_X64 )) 
          
          zero_vert_normal_bulk = zero_vert_normal_bulk_SSE;
    #endif