diff --git a/src/arch/arm/isa/formats/fp.isa b/src/arch/arm/isa/formats/fp.isa
index 3a0cad1c5..2267ee34f 100644
--- a/src/arch/arm/isa/formats/fp.isa
+++ b/src/arch/arm/isa/formats/fp.isa
@@ -143,7 +143,7 @@ let {{
                                                  bits(machInst, 22) << 4);
         const uint32_t type = bits(machInst, 11, 8);
         uint32_t size = 0;
-        uint32_t align = 0;
+        uint32_t align = TLB::MustBeOne;
         unsigned inc = 1;
         unsigned regs = 1;
         unsigned lane = 0;