3 files changed, 5 insertions, 5 deletions
diff --git a/src/libs/cplusplus/BackwardsScanner.h b/src/libs/cplusplus/BackwardsScanner.h
index 26b45f5667..a2cb6e6ac3 100644
--- a/src/libs/cplusplus/BackwardsScanner.h
+++ b/src/libs/cplusplus/BackwardsScanner.h
@@ -41,9 +41,9 @@ class CPLUSPLUS_EXPORT BackwardsScanner
     enum { MAX_BLOCK_COUNT = 10 };
 
 public:
-    BackwardsScanner(const QTextCursor &cursor,
-                     int maxBlockCount = MAX_BLOCK_COUNT,
-                     const QString &suffix = QString());
+    explicit BackwardsScanner(const QTextCursor &cursor,
+                              int maxBlockCount = MAX_BLOCK_COUNT,
+                              const QString &suffix = QString());
 
     int startToken() const;
 
diff --git a/src/libs/cplusplus/PreprocessorClient.h b/src/libs/cplusplus/PreprocessorClient.h
index 649f6ddfe7..b9d9145fce 100644
--- a/src/libs/cplusplus/PreprocessorClient.h
+++ b/src/libs/cplusplus/PreprocessorClient.h
@@ -48,7 +48,7 @@ class CPLUSPLUS_EXPORT MacroArgumentReference
   unsigned _length;
 
 public:
-  MacroArgumentReference(unsigned position = 0, unsigned length = 0)
+  explicit MacroArgumentReference(unsigned position = 0, unsigned length = 0)
     : _position(position), _length(length)
   { }
 
diff --git a/src/libs/cplusplus/pp-macro-expander.h b/src/libs/cplusplus/pp-macro-expander.h
index f19be4111f..2021c3f2fb 100644
--- a/src/libs/cplusplus/pp-macro-expander.h
+++ b/src/libs/cplusplus/pp-macro-expander.h
@@ -80,7 +80,7 @@ class MacroExpander
     const QByteArray *resolve_formal(const QByteArray &name);
 
 public:
-    MacroExpander(Environment *env, pp_frame *frame = 0, Client *client = 0, unsigned start_offset = 0);
+    explicit MacroExpander(Environment *env, pp_frame *frame = 0, Client *client = 0, unsigned start_offset = 0);
 
     const char *operator()(const char *first, const char *last,
                              QByteArray *result);