diff --git a/reaction/code/asm/ftola.asm b/reaction/code/asm/ftola.asm
index 370c12d8..20181d76 100644
--- a/reaction/code/asm/ftola.asm
+++ b/reaction/code/asm/ftola.asm
@@ -21,6 +21,9 @@
 ; MASM ftol conversion functions using SSE or FPU
 ; assume __cdecl calling convention is being used for x86, __fastcall for x64
 
+.686
+.xmm
+
 IFNDEF idx64
 .model flat, c
 ENDIF
diff --git a/reaction/code/asm/snapvector.asm b/reaction/code/asm/snapvector.asm
index eca40fe1..2b4282cc 100644
--- a/reaction/code/asm/snapvector.asm
+++ b/reaction/code/asm/snapvector.asm
@@ -24,6 +24,9 @@
 ; function prototype:
 ; void qsnapvector(vec3_t vec)
 
+.686
+.xmm
+
 IFNDEF idx64
 .model flat, c
 ENDIF