diff --git a/src/arch/x86/isa/microasm.isa b/src/arch/x86/isa/microasm.isa
index 137ba6b146..25b58dfb72 100644
--- a/src/arch/x86/isa/microasm.isa
+++ b/src/arch/x86/isa/microasm.isa
@@ -219,6 +219,8 @@ let {{
         return regIdx("NUM_FLOATREGS + (((%s) + 8) %% 8)" % index)
 
     assembler.symbols["st"] = stack_index
+    assembler.symbols["sti"] = stack_index("env.reg")
+    assembler.symbols["stim"] = stack_index("env.regm")
 
     macroopDict = assembler.assemble(microcode)