6 files changed, 9 insertions, 9 deletions
diff --git a/qmake/generators/makefiledeps.h b/qmake/generators/makefiledeps.h
index 7602b5ef4e..5eb66e9de4 100644
--- a/qmake/generators/makefiledeps.h
+++ b/qmake/generators/makefiledeps.h
@@ -63,10 +63,10 @@ public:
     inline const QString &real() const { return real_name; }
     const QString &local() const;
 
-    bool operator==(const QMakeLocalFileName &other) {
+    bool operator==(const QMakeLocalFileName &other) const {
         return (this->real_name == other.real_name);
     }
-    bool operator!=(const QMakeLocalFileName &other) {
+    bool operator!=(const QMakeLocalFileName &other) const {
         return !(*this == other);
     }
 };
diff --git a/src/corelib/mimetypes/qmimemagicrulematcher.cpp b/src/corelib/mimetypes/qmimemagicrulematcher.cpp
index cdd73076fd..4a9cd2971e 100644
--- a/src/corelib/mimetypes/qmimemagicrulematcher.cpp
+++ b/src/corelib/mimetypes/qmimemagicrulematcher.cpp
@@ -67,7 +67,7 @@ QMimeMagicRuleMatcher::QMimeMagicRuleMatcher(const QString &mime, unsigned thePr
 {
 }
 
-bool QMimeMagicRuleMatcher::operator==(const QMimeMagicRuleMatcher &other)
+bool QMimeMagicRuleMatcher::operator==(const QMimeMagicRuleMatcher &other) const
 {
     return m_list == other.m_list &&
            m_priority == other.m_priority;
diff --git a/src/corelib/mimetypes/qmimemagicrulematcher_p.h b/src/corelib/mimetypes/qmimemagicrulematcher_p.h
index b2bb287207..e4099da3cd 100644
--- a/src/corelib/mimetypes/qmimemagicrulematcher_p.h
+++ b/src/corelib/mimetypes/qmimemagicrulematcher_p.h
@@ -55,7 +55,7 @@ class QMimeMagicRuleMatcher
 public:
     explicit QMimeMagicRuleMatcher(const QString &mime, unsigned priority = 65535);
 
-    bool operator==(const QMimeMagicRuleMatcher &other);
+    bool operator==(const QMimeMagicRuleMatcher &other) const;
 
     void addRule(const QMimeMagicRule &rule);
     void addRules(const QList<QMimeMagicRule> &rules);
diff --git a/src/gui/opengl/qopenglengineshadermanager_p.h b/src/gui/opengl/qopenglengineshadermanager_p.h
index 72ae1f9073..997a9d8e79 100644
--- a/src/gui/opengl/qopenglengineshadermanager_p.h
+++ b/src/gui/opengl/qopenglengineshadermanager_p.h
@@ -399,7 +399,7 @@ public:
     bool                useOpacityAttribute;
     bool                usePmvMatrixAttribute;
 
-    bool operator==(const QOpenGLEngineShaderProg& other) {
+    bool operator==(const QOpenGLEngineShaderProg& other) const {
         // We don't care about the program
         return ( mainVertexShader      == other.mainVertexShader &&
                  positionVertexShader  == other.positionVertexShader &&
diff --git a/src/sql/kernel/qsqlerror.cpp b/src/sql/kernel/qsqlerror.cpp
index edf034a48d..67c3be0c2d 100644
--- a/src/sql/kernel/qsqlerror.cpp
+++ b/src/sql/kernel/qsqlerror.cpp
@@ -121,7 +121,7 @@ QSqlError& QSqlError::operator=(const QSqlError& other)
     Compare the \a other error's values to this error and returns true, if it equal.
 */
 
-bool QSqlError::operator==(const QSqlError& other)
+bool QSqlError::operator==(const QSqlError& other) const
 {
     return (errorType == other.errorType);
 }
@@ -131,7 +131,7 @@ bool QSqlError::operator==(const QSqlError& other)
     Compare the \a other error's values to this error and returns true if it is not equal.
 */
 
-bool QSqlError::operator!=(const QSqlError& other)
+bool QSqlError::operator!=(const QSqlError& other) const
 {
     return (errorType != other.errorType);
 }
diff --git a/src/sql/kernel/qsqlerror.h b/src/sql/kernel/qsqlerror.h
index 5a9cb50af0..dd2b650a57 100644
--- a/src/sql/kernel/qsqlerror.h
+++ b/src/sql/kernel/qsqlerror.h
@@ -66,8 +66,8 @@ public:
                 int number = -1);
     QSqlError(const QSqlError& other);
     QSqlError& operator=(const QSqlError& other);
-    bool operator==(const QSqlError& other);
-    bool operator!=(const QSqlError& other);
+    bool operator==(const QSqlError& other) const;
+    bool operator!=(const QSqlError& other) const;
     ~QSqlError();
 
     QString driverText() const;