diff --git a/src/compiler/build_tables/build_lex_table.cc b/src/compiler/build_tables/build_lex_table.cc
index 79a05522..1dca5e91 100644
--- a/src/compiler/build_tables/build_lex_table.cc
+++ b/src/compiler/build_tables/build_lex_table.cc
@@ -159,13 +159,9 @@ class LexTableBuilder {
   void mark_fragile_tokens() {
     for (LexState &state : lex_table.states)
       if (state.default_action.type == LexActionTypeAccept)
-        if (has_fragile_token(state.default_action.symbol))
+        if (conflict_manager.fragile_tokens.count(state.default_action.symbol))
           state.default_action.type = LexActionTypeAcceptFragile;
   }
-
-  bool has_fragile_token(const Symbol &symbol) {
-    return conflict_manager.fragile_tokens.find(symbol) != conflict_manager.fragile_tokens.end();
-  }
 };
 
 LexTable build_lex_table(ParseTable *table, const LexicalGrammar &grammar) {
diff --git a/src/compiler/build_tables/build_parse_table.cc b/src/compiler/build_tables/build_parse_table.cc
index 82db5721..292ff63c 100644
--- a/src/compiler/build_tables/build_parse_table.cc
+++ b/src/compiler/build_tables/build_parse_table.cc
@@ -282,7 +282,7 @@ class ParseTableBuilder {
 
         if (item.step_index > 0) {
           set<Symbol> first_set = get_first_set(next_symbol);
-          if (first_set.find(lookahead) != first_set.end()) {
+          if (first_set.count(lookahead)) {
             involved_symbols.insert(item.lhs());
             core_shift_items.insert(item);
           }
diff --git a/src/compiler/build_tables/lex_item_transitions.cc b/src/compiler/build_tables/lex_item_transitions.cc
index 46961d5c..9b7500e7 100644
--- a/src/compiler/build_tables/lex_item_transitions.cc
+++ b/src/compiler/build_tables/lex_item_transitions.cc
@@ -75,7 +75,7 @@ class LexItemTransitions : public rules::RuleFn<void> {
 
   map<rules::MetadataKey, int> activate_precedence(
     map<rules::MetadataKey, int> metadata) {
-    if (metadata.find(rules::PRECEDENCE) != metadata.end())
+    if (metadata.count(rules::PRECEDENCE))
       metadata.insert({ rules::IS_ACTIVE, 1 });
     return metadata;
   }
diff --git a/src/compiler/generate_code/c_code.cc b/src/compiler/generate_code/c_code.cc
index 5b10b01a..292fe82a 100644
--- a/src/compiler/generate_code/c_code.cc
+++ b/src/compiler/generate_code/c_code.cc
@@ -172,7 +172,7 @@ class CCodeGenerator {
 
         add(", ");
 
-        if (syntax_grammar.ubiquitous_tokens.find(symbol) != syntax_grammar.ubiquitous_tokens.end())
+        if (syntax_grammar.ubiquitous_tokens.count(symbol))
           add(".extra = true");
         else
           add(".extra = false");