diff --git a/cpu/ppc/ppcfpopcodes.cpp b/cpu/ppc/ppcfpopcodes.cpp
index 4e80935..e07c086 100644
--- a/cpu/ppc/ppcfpopcodes.cpp
+++ b/cpu/ppc/ppcfpopcodes.cpp
@@ -236,7 +236,7 @@ static void fpresult_update(double set_result) {
         }
 
         if (std::isinf(set_result))
-            ppc_state.fpscr |= FPCC_FPRCD;
+            ppc_state.fpscr |= FPCC_FUNAN;
     }
 }