diff --git a/dtool/Config.Irix.pp b/dtool/Config.Irix.pp
index c5ea362eb8..40e224d506 100644
--- a/dtool/Config.Irix.pp
+++ b/dtool/Config.Irix.pp
@@ -82,6 +82,9 @@
 // umask?
 #define HAVE_OPEN_MASK 1
 
+// Do the compiler or system libraries define wchar_t for you?
+#define HAVE_WCHAR_T 1
+
 // Does <string> define the typedef wstring?  Most do, but for some
 // reason, versions of gcc before 3.0 didn't do this.
 #define HAVE_WSTRING 1
diff --git a/dtool/Config.Linux.pp b/dtool/Config.Linux.pp
index 052cc54479..18b52b6561 100644
--- a/dtool/Config.Linux.pp
+++ b/dtool/Config.Linux.pp
@@ -85,6 +85,9 @@
 // umask?  Versions of gcc prior to 3.2 had this.
 #define HAVE_OPEN_MASK
 
+// Do the compiler or system libraries define wchar_t for you?
+#define HAVE_WCHAR_T 1
+
 // Does <string> define the typedef wstring?  Most do, but for some
 // reason, versions of gcc before 3.0 didn't do this.
 #define HAVE_WSTRING 1
diff --git a/dtool/Config.Win32.pp b/dtool/Config.Win32.pp
index 52476493d6..ea692c7ffd 100644
--- a/dtool/Config.Win32.pp
+++ b/dtool/Config.Win32.pp
@@ -85,6 +85,9 @@
 // umask?
 #define HAVE_OPEN_MASK
 
+// Do the compiler or system libraries define wchar_t for you?
+#define HAVE_WCHAR_T 1
+
 // Does <string> define the typedef wstring?  Most do, but for some
 // reason, versions of gcc before 3.0 didn't do this.
 #define HAVE_WSTRING 1
diff --git a/dtool/LocalSetup.pp b/dtool/LocalSetup.pp
index f53ea6fb6f..ab142d69e0 100644
--- a/dtool/LocalSetup.pp
+++ b/dtool/LocalSetup.pp
@@ -148,7 +148,7 @@ $[cdefine HAVE_NAMESPACE]
 /* Define if fstream::open() accepts a third parameter for umask. */
 $[cdefine HAVE_OPEN_MASK]
 
-/* Define if the some header file defines wchar_t. */
+/* Define if some header file defines wchar_t. */
 $[cdefine HAVE_WCHAR_T]
 
 /* Define if the <string> header file defines wstring. */