diff --git a/PowerEditor/src/Notepad_plus.rc b/PowerEditor/src/Notepad_plus.rc
index 1f10edc5..38180858 100644
--- a/PowerEditor/src/Notepad_plus.rc
+++ b/PowerEditor/src/Notepad_plus.rc
@@ -898,6 +898,7 @@ BEGIN
     CONTROL         "",IDI_CHAMELEON,"Static",SS_OWNERDRAW,20,5,64,64
     //CONTROL         "",IDI_JESUISCHARLIE,"Static",SS_OWNERDRAW,20,5,64,64
     LTEXT           NOTEPAD_PLUS_VERSION, IDC_STATIC,70,20,140,11
+    LTEXT           "bit",IDC_VERSION_BIT,150,20,140,11
     LTEXT           "Author :",IDC_STATIC,21,45,31,8
     LTEXT           "Notepad++ team",IDC_AUTHOR_NAME,78,45,70,8
     LTEXT           "Home Page :",IDC_STATIC,21,59,47,8
diff --git a/PowerEditor/src/Parameters.cpp b/PowerEditor/src/Parameters.cpp
index 605510bb..db86b61b 100644
--- a/PowerEditor/src/Parameters.cpp
+++ b/PowerEditor/src/Parameters.cpp
@@ -961,6 +961,8 @@ bool NppParameters::load()
 	for (int i = 0 ; i < NB_LANG ; _langList[i] = NULL, ++i)
 	{}
 
+	_isx64 = sizeof(void *) == 8;
+
 	// Make localConf.xml path
 	generic_string localConfPath(_nppPath);
 	PathAppend(localConfPath, localConfFile);
diff --git a/PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp b/PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp
index 4085b1d4..387b45c8 100644
--- a/PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp
+++ b/PowerEditor/src/WinControls/AboutDlg/AboutDlg.cpp
@@ -47,6 +47,10 @@ INT_PTR CALLBACK AboutDlg::run_dlgProc(UINT message, WPARAM wParam, LPARAM lPara
 			buildTime += TEXT(" - ");
 			buildTime +=  wmc->char2wchar(__TIME__, CP_ACP);
 
+			NppParameters *pNppParam = NppParameters::getInstance();
+			LPCTSTR bitness = pNppParam ->isx64() ? TEXT("(64-bit)") : TEXT("(32-bit)");
+			::SetDlgItemText(_hSelf, IDC_VERSION_BIT, bitness);
+
 			::SendMessage(compileDateHandle, WM_SETTEXT, 0, (LPARAM)buildTime.c_str());
 			::EnableWindow(compileDateHandle, FALSE);
 
@@ -62,7 +66,6 @@ INT_PTR CALLBACK AboutDlg::run_dlgProc(UINT message, WPARAM wParam, LPARAM lPara
 
 			getClientRect(_rc);
 
-			NppParameters *pNppParam = NppParameters::getInstance();
 			ETDTProc enableDlgTheme = (ETDTProc)pNppParam->getEnableThemeDlgTexture();
 			if (enableDlgTheme)
 			{
diff --git a/PowerEditor/src/resource.h b/PowerEditor/src/resource.h
index 72a75e46..bfc4a926 100644
--- a/PowerEditor/src/resource.h
+++ b/PowerEditor/src/resource.h
@@ -284,6 +284,7 @@
 #define IDC_ONLINEHELP_ADDR 1704
 #define IDC_AUTHOR_NAME 1705
 #define IDC_BUILD_DATETIME 1706        //LS: CompileDateInAboutDialog: Automatically insert compile date as additional version info in About-dialog!
+#define IDC_VERSION_BIT 1707
 
 #define IDD_DEBUGINFOBOX 1750
 #define IDC_DEBUGINFO_EDIT 1751