diff --git a/src/themes/chartthemebluecerulean_p.h b/src/themes/chartthemebluecerulean_p.h
index e7c5bc0..2843438 100644
--- a/src/themes/chartthemebluecerulean_p.h
+++ b/src/themes/chartthemebluecerulean_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEBLUECERULEAN_P_H
+#define CHARTTHEMEBLUECERULEAN_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -54,3 +57,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemeblueicy_p.h b/src/themes/chartthemeblueicy_p.h
index 6a648ec..32acd90 100644
--- a/src/themes/chartthemeblueicy_p.h
+++ b/src/themes/chartthemeblueicy_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEBLUECEICY_P_H
+#define CHARTTHEMEBLUECEICY_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -54,3 +57,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemebluencs_p.h b/src/themes/chartthemebluencs_p.h
index f1bd5e3..7c301bd 100644
--- a/src/themes/chartthemebluencs_p.h
+++ b/src/themes/chartthemebluencs_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEBLUENCS_P_H
+#define CHARTTHEMEBLUENCS_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -54,3 +57,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemebrownsand_p.h b/src/themes/chartthemebrownsand_p.h
index a760432..6638644 100644
--- a/src/themes/chartthemebrownsand_p.h
+++ b/src/themes/chartthemebrownsand_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEBROWNSAND_P_H
+#define CHARTTHEMEBROWNSAND_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -54,3 +57,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemedark_p.h b/src/themes/chartthemedark_p.h
index 7f7cce8..d618283 100644
--- a/src/themes/chartthemedark_p.h
+++ b/src/themes/chartthemedark_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEDARK_P_H
+#define CHARTTHEMEDARK_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -54,3 +57,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemedefault_p.h b/src/themes/chartthemedefault_p.h
index f59e880..4b882d7 100644
--- a/src/themes/chartthemedefault_p.h
+++ b/src/themes/chartthemedefault_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEDEFAULT_P_H
+#define CHARTTHEMEDEFAULT_P_H
+
 #include "charttheme_p.h"
 #ifdef Q_OS_WIN
 #include <windows.h>
@@ -163,3 +166,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemehighcontrast_p.h b/src/themes/chartthemehighcontrast_p.h
index 14d995a..a45b574 100644
--- a/src/themes/chartthemehighcontrast_p.h
+++ b/src/themes/chartthemehighcontrast_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEHIGHCONTRAST_P_H
+#define CHARTTHEMEHIGHCONTRAST_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -55,3 +58,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif
diff --git a/src/themes/chartthemelight_p.h b/src/themes/chartthemelight_p.h
index 01bc093..a3e49f2 100644
--- a/src/themes/chartthemelight_p.h
+++ b/src/themes/chartthemelight_p.h
@@ -18,6 +18,9 @@
 **
 ****************************************************************************/
 
+#ifndef CHARTTHEMEHIGHLIGHT_P_H
+#define CHARTTHEMEHIGHLIGHT_P_H
+
 #include "charttheme_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
@@ -53,3 +56,5 @@ public:
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif