diff --git a/include/wx/platinfo.h b/include/wx/platinfo.h
index 631b5c1c4d..17f9dbea08 100644
--- a/include/wx/platinfo.h
+++ b/include/wx/platinfo.h
@@ -82,7 +82,7 @@ enum wxPortId
     wxPORT_QT       = 1 << 10       // wxQT, using Qt 5+
 };
 
-// architecture of the operating system
+// architecture bitness of the operating system
 // (regardless of the build environment of wxWidgets library - see
 // wxIsPlatform64bit documentation for more info)
 enum wxArchitecture
@@ -134,7 +134,7 @@ struct wxLinuxDistributionInfo
 // ----------------------------------------------------------------------------
 
 // Information about the toolkit that the app is running under and some basic
-// platform and architecture info
+// platform and architecture bitness info
 class WXDLLIMPEXP_BASE wxPlatformInfo
 {
 public:
@@ -359,7 +359,7 @@ protected:
     // others
     // -----------------
 
-    // architecture of the OS/machine
+    // architecture bitness of the OS/machine
     wxArchitecture m_arch;
 
     // endianness of the machine
diff --git a/include/wx/utils.h b/include/wx/utils.h
index f70bbd4b20..ff1dc72acf 100644
--- a/include/wx/utils.h
+++ b/include/wx/utils.h
@@ -150,7 +150,7 @@ WXDLLIMPEXP_BASE bool wxCheckOsVersion(int majorVsn, int minorVsn = 0, int micro
 // Get platform endianness
 WXDLLIMPEXP_BASE bool wxIsPlatformLittleEndian();
 
-// Get platform architecture
+// Get platform architecture bitness
 WXDLLIMPEXP_BASE bool wxIsPlatform64Bit();
 
 // Get machine CPU architecture
diff --git a/interface/wx/platinfo.h b/interface/wx/platinfo.h
index 1447df23c7..93372516ee 100644
--- a/interface/wx/platinfo.h
+++ b/interface/wx/platinfo.h
@@ -74,7 +74,7 @@ enum wxPortId
 
 
 /**
-    The architecture of the operating system
+    The architecture bitness of the operating system
     (regardless of the build environment of wxWidgets library - see ::wxIsPlatform64Bit()
     documentation for more info).
 */
@@ -126,7 +126,7 @@ struct wxLinuxDistributionInfo
     @class wxPlatformInfo
 
     This class holds information about the operating system, the toolkit and the
-    basic architecture of the machine where the application is currently running.
+    basic architecture bitness of the machine where the application is currently running.
 
     This class does not only have @e getters for the information above, it also has
     @e setters. This allows you to e.g. save the current platform information in a
@@ -227,7 +227,7 @@ public:
 
     /**
         Converts the given string to a wxArchitecture enum value or to
-        @c wxARCH_INVALID if the given string is not a valid architecture string
+        @c wxARCH_INVALID if the given string is not a valid architecture bitness string
         (i.e. does not contain nor @c 32 nor @c 64 strings).
     */
     static wxArchitecture GetArch(const wxString& arch);
@@ -322,7 +322,7 @@ public:
     //@{
 
     /**
-        Returns the architecture ID of this wxPlatformInfo instance.
+        Returns the architecture bitness ID of this wxPlatformInfo instance.
     */
     wxArchitecture GetArchitecture() const;
 
@@ -440,7 +440,7 @@ public:
     //@{
 
     /**
-        Returns the name for the architecture of this wxPlatformInfo instance.
+        Returns the name for the architecture bitness of this wxPlatformInfo instance.
     */
     wxString GetArchName() const;
 
@@ -483,7 +483,7 @@ public:
     //@{
 
     /**
-        Sets the architecture enum value associated with this wxPlatformInfo instance.
+        Sets the architecture bitness enum value associated with this wxPlatformInfo instance.
     */
     void SetArchitecture(wxArchitecture n);
 
diff --git a/interface/wx/utils.h b/interface/wx/utils.h
index 1793b13062..b241060a96 100644
--- a/interface/wx/utils.h
+++ b/interface/wx/utils.h
@@ -970,12 +970,11 @@ bool wxCheckOsVersion(int majorVsn, int minorVsn = 0, int microVsn = 0);
     bit. The check is performed at run-time and may differ from the value
     available at compile-time (at compile-time you can just check if
     <tt>sizeof(void*) == 8</tt>) since the program could be running in
-    emulation mode or in a mixed 32/64 bit system (bi-architecture operating
-    system).
+    emulation mode or in a mixed 32/64 bit system.
 
     @note This function is not 100% reliable on some systems given the fact
           that there isn't always a standard way to do a reliable check on the
-          OS architecture.
+          OS bitness.
 
     @header{wx/utils.h}
 */
diff --git a/tests/interactive/output.cpp b/tests/interactive/output.cpp
index 7e61454059..f854cd2d8a 100644
--- a/tests/interactive/output.cpp
+++ b/tests/interactive/output.cpp
@@ -280,7 +280,7 @@ void InteractiveOutputTestCase::TestPlatformInfo()
     wxPrintf(wxT("Operating system name is: %s\n"), plat.GetOperatingSystemIdName());
     wxPrintf(wxT("Port ID name is: %s\n"), plat.GetPortIdName());
     wxPrintf(wxT("Port ID short name is: %s\n"), plat.GetPortIdShortName());
-    wxPrintf(wxT("Architecture is: %s\n"), plat.GetArchName());
+    wxPrintf(wxT("Architecture bitness is: %s\n"), plat.GetArchName());
     wxPrintf(wxT("Endianness is: %s\n"), plat.GetEndiannessName());
 
     wxPuts(wxEmptyString);