diff --git a/headers/os/LocaleKit.h b/headers/os/LocaleKit.h
index b94c2e5659..d7179d2f87 100644
--- a/headers/os/LocaleKit.h
+++ b/headers/os/LocaleKit.h
@@ -21,7 +21,6 @@
 #include <Language.h>
 #include <Locale.h>
 #include <NumberFormat.h>
-#include <NumberFormatImpl.h>
 #include <NumberFormatParameters.h>
 #include <TimeFormat.h>
 #include <UnicodeChar.h>
diff --git a/headers/os/locale/FloatFormatImpl.h b/headers/os/locale/FloatFormatImpl.h
index ec877a41c5..ad36779df7 100644
--- a/headers/os/locale/FloatFormatImpl.h
+++ b/headers/os/locale/FloatFormatImpl.h
@@ -1,13 +1,11 @@
 #ifndef _B_FLOAT_FORMAT_IMPL_H_
 #define _B_FLOAT_FORMAT_IMPL_H_
 
-#include <NumberFormatImpl.h>
-
 struct format_field_position;
 class BFloatFormatParameters;
 class BString;
 
-class BFloatFormatImpl : public BNumberFormatImpl {
+class BFloatFormatImpl {
 	public:
 		BFloatFormatImpl();
 		virtual ~BFloatFormatImpl();
diff --git a/headers/os/locale/IntegerFormatImpl.h b/headers/os/locale/IntegerFormatImpl.h
index ecd192f19a..a4231d09b4 100644
--- a/headers/os/locale/IntegerFormatImpl.h
+++ b/headers/os/locale/IntegerFormatImpl.h
@@ -1,13 +1,11 @@
 #ifndef _B_INTEGER_FORMAT_IMPL_H_
 #define _B_INTEGER_FORMAT_IMPL_H_
 
-#include <NumberFormatImpl.h>
-
 struct format_field_position;
 class BIntegerFormatParameters;
 class BString;
 
-class BIntegerFormatImpl : public BNumberFormatImpl {
+class BIntegerFormatImpl {
 	public:
 		BIntegerFormatImpl();
 		virtual ~BIntegerFormatImpl();