diff --git a/src/option.c b/src/option.c
index ecfdc40..2b9ba2d 100644
--- a/src/option.c
+++ b/src/option.c
@@ -5615,7 +5615,7 @@
 	flagp = insecure_flag(idx, opt_flags);
 	return (*flagp & P_INSECURE) != 0;
     }
-    EMSG2(_(e_intern2), "was_set_insecurely()");
+    internal_error("was_set_insecurely()");
     return -1;
 }
 
@@ -5696,7 +5696,7 @@
 	if (idx < 0)	/* not found (should not happen) */
 	{
 	    EMSG2(_(e_intern2), "set_string_option_direct()");
-	    EMSG2(_("For option %s"), name);
+	    IEMSG2(_("For option %s"), name);
 	    return;
 	}
     }
@@ -9375,7 +9375,7 @@
 		    ret = NULL;
 		break;
 	    default:
-		EMSG2(_(e_intern2), "option_iter_next()");
+		internal_error("option_iter_next()");
 		return NULL;
 	}
     }
@@ -10496,7 +10496,7 @@
 #ifdef FEAT_SIGNS
 	case PV_SCL:	return (char_u *)&(curwin->w_p_scl);
 #endif
-	default:	EMSG(_("E356: get_varp ERROR"));
+	default:	IEMSG(_("E356: get_varp ERROR"));
     }
     /* always return a valid pointer to avoid a crash! */
     return (char_u *)&(curbuf->b_p_wm);