diff --git a/reactos/lib/kjs/ksrc/ejumps.h b/reactos/lib/kjs/ksrc/ejumps.h
index d5c0183790a..4717d66fddc 100644
--- a/reactos/lib/kjs/ksrc/ejumps.h
+++ b/reactos/lib/kjs/ksrc/ejumps.h
@@ -1175,6 +1175,7 @@ op_div:
       case JS_NAN:
       default:
 	nan = 1;
+	l = 0.0;
 	break;
       }
 
@@ -1202,6 +1203,7 @@ op_div:
       case JS_NAN:
       default:
 	nan = 1;
+	r = 0.0;
 	break;
       }
 
diff --git a/reactos/lib/kjs/ksrc/eswitch.h b/reactos/lib/kjs/ksrc/eswitch.h
index 2836a8f84d5..41c6634b35b 100644
--- a/reactos/lib/kjs/ksrc/eswitch.h
+++ b/reactos/lib/kjs/ksrc/eswitch.h
@@ -1135,6 +1135,7 @@ case 41:
       case JS_NAN:
       default:
 	nan = 1;
+	l = 0.0;
 	break;
       }
 
@@ -1162,6 +1163,7 @@ case 41:
       case JS_NAN:
       default:
 	nan = 1;
+	r = 0.0;
 	break;
       }
 
diff --git a/reactos/lib/kjs/ksrc/eswt0.h b/reactos/lib/kjs/ksrc/eswt0.h
index d0dc1acc68c..60b593ec3ed 100644
--- a/reactos/lib/kjs/ksrc/eswt0.h
+++ b/reactos/lib/kjs/ksrc/eswt0.h
@@ -1133,6 +1133,7 @@ case 41:
       case JS_NAN:
       default:
 	nan = 1;
+	l = 0.0;
 	break;
       }
 
@@ -1160,6 +1161,7 @@ case 41:
       case JS_NAN:
       default:
 	nan = 1;
+	r = 0.0;
 	break;
       }