diff --git a/src/eval.c b/src/eval.c
index 0c5967b..6094b60 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -997,7 +997,7 @@
 	    if (len == 0)
 	    {
 		if (!quiet)
-		    emsg(_(e_emptykey));
+		    emsg(_(e_cannot_use_empty_key_for_dictionary));
 		return NULL;
 	    }
 	    p = key + len;
@@ -1148,7 +1148,7 @@
 		if (lp->ll_dict == get_vimvar_dict()
 			 || &lp->ll_dict->dv_hashtab == get_funccal_args_ht())
 		{
-		    semsg(_(e_illvar), name);
+		    semsg(_(e_illegal_variable_name_str), name);
 		    clear_tv(&var1);
 		    return NULL;
 		}
@@ -1157,7 +1157,7 @@
 		if (*p == '[' || *p == '.' || unlet)
 		{
 		    if (!quiet)
-			semsg(_(e_dictkey), key);
+			semsg(_(e_key_not_present_in_dictionary), key);
 		    clear_tv(&var1);
 		    return NULL;
 		}
@@ -1306,7 +1306,7 @@
 
 	    if (op != NULL && *op != '=')
 	    {
-		semsg(_(e_letwrong), op);
+		semsg(_(e_wrong_variable_type_for_str_equal), op);
 		return;
 	    }
 	    if (value_check_lock(lp->ll_blob->bv_lock, lp->ll_name, FALSE))
@@ -1335,7 +1335,7 @@
 	    if ((flags & (ASSIGN_CONST | ASSIGN_FINAL))
 					     && (flags & ASSIGN_FOR_LOOP) == 0)
 	    {
-		emsg(_(e_cannot_mod));
+		emsg(_(e_cannot_modify_existing_variable));
 		*endp = cc;
 		return;
 	    }
@@ -1401,7 +1401,7 @@
 	{
 	    if (op != NULL && *op != '=')
 	    {
-		semsg(_(e_dictkey), lp->ll_newkey);
+		semsg(_(e_key_not_present_in_dictionary), lp->ll_newkey);
 		return;
 	    }
 	    if (dict_wrong_func_name(lp->ll_tv->vval.v_dict, rettv,
@@ -1590,7 +1590,7 @@
 	}
     }
 
-    semsg(_(e_letwrong), op);
+    semsg(_(e_wrong_variable_type_for_str_equal), op);
     return FAIL;
 }
 
@@ -3248,7 +3248,7 @@
 		}
 		else
 		{
-		    emsg(_(e_modulus));
+		    emsg(_(e_cannot_use_percent_with_float));
 		    return FAIL;
 		}
 		rettv->v_type = VAR_FLOAT;
@@ -4325,7 +4325,7 @@
 		    {
 			if (keylen > 0)
 			    key[keylen] = NUL;
-			semsg(_(e_dictkey), key);
+			semsg(_(e_key_not_present_in_dictionary), key);
 		    }
 		    return FAIL;
 		}