diff --git a/pulley/src/interp.rs b/pulley/src/interp.rs
index 5df690fd82f..821418cbf9a 100644
--- a/pulley/src/interp.rs
+++ b/pulley/src/interp.rs
@@ -2136,14 +2136,14 @@ impl OpVisitor for Interpreter<'_> {
     fn fcopysign32(&mut self, operands: BinaryOperands<FReg>) -> ControlFlow<Done> {
         let a = self.state[operands.src1].get_f32();
         let b = self.state[operands.src2].get_f32();
-        self.state[operands.dst].set_f32(a.copysign(b));
+        self.state[operands.dst].set_f32(a.wasm_copysign(b));
         ControlFlow::Continue(())
     }
 
     fn fcopysign64(&mut self, operands: BinaryOperands<FReg>) -> ControlFlow<Done> {
         let a = self.state[operands.src1].get_f64();
         let b = self.state[operands.src2].get_f64();
-        self.state[operands.dst].set_f64(a.copysign(b));
+        self.state[operands.dst].set_f64(a.wasm_copysign(b));
         ControlFlow::Continue(())
     }