diff --git a/common/array.h b/common/array.h
index 11082a7486b..18dc406255f 100644
--- a/common/array.h
+++ b/common/array.h
@@ -27,10 +27,7 @@
 #include "common/algorithm.h"
 #include "common/textconsole.h" // For error()
 #include "common/memory.h"
-
-#ifdef USE_CXX11
 #include "common/initializer_list.h"
-#endif
 
 namespace Common {
 
@@ -99,7 +96,6 @@ public:
 		}
 	}
 
-#ifdef USE_CXX11
 	/**
 	 * Construct an array as a copy of the given array using the C++11 move semantic.
 	 */
@@ -124,7 +120,6 @@ public:
 		if (_storage)
 			Common::uninitialized_copy(list.begin(), list.end(), _storage);
 	}
-#endif
 
 	/**
 	 * Construct an array by copying data from a regular array.
@@ -258,7 +253,6 @@ public:
 		return *this;
 	}
 
-#ifdef USE_CXX11
 	/** Assign the given array to this array using the C++11 move semantic. */
 	Array &operator=(Array<T> &&old) {
 		if (this == &old)
@@ -275,7 +269,6 @@ public:
 
 		return *this;
 	}
-#endif
 
 	/** Return the size of the array. */
 	size_type size() const {
diff --git a/common/initializer_list.h b/common/initializer_list.h
index 9745a927545..024215c96a3 100644
--- a/common/initializer_list.h
+++ b/common/initializer_list.h
@@ -2,8 +2,6 @@
 #define COMMON_INITIALIZER_LIST_H
 
 // Some compiler only have partial support for C++11 and we provide replacements for reatures not available.
-#ifdef USE_CXX11
-
 #ifdef NO_CXX11_INITIALIZER_LIST
 namespace std {
 	template<class T> class initializer_list {
@@ -44,6 +42,4 @@ namespace std {
 
 #endif // NO_CXX11_INITIALIZER_LIST
 
-#endif // USE_CXX11
-
 #endif // COMMON_INITIALIZER_LIST_H
diff --git a/common/ptr.h b/common/ptr.h
index 4196bb76599..2bc1005be53 100644
--- a/common/ptr.h
+++ b/common/ptr.h
@@ -27,10 +27,9 @@
 #include "common/noncopyable.h"
 #include "common/safe-bool.h"
 #include "common/types.h"
-#ifdef USE_CXX11
+
 /* For nullptr_t */
 #include <cstddef>
-#endif
 
 namespace Common {
 
@@ -89,10 +88,8 @@ public:
 	BasePtr() : _refCount(nullptr), _deletion(nullptr), _pointer(nullptr) {
 	}
 
-#ifdef USE_CXX11
 	explicit BasePtr(std::nullptr_t) : _refCount(nullptr), _deletion(nullptr), _pointer(nullptr) {
 	}
-#endif
 
 	template<class T2>
 	explicit BasePtr(T2 *p) : _refCount(new RefValue(1)), _deletion(new BasePtrDeletionImpl<T2>(p)), _pointer(p) {
@@ -286,10 +283,8 @@ public:
 	SharedPtr() : BasePtr<T>() {
 	}
 
-#ifdef USE_CXX11
 	SharedPtr(std::nullptr_t) : BasePtr<T>() {
 	}
-#endif
 
 	template<class T2>
 	explicit SharedPtr(T2 *p) : BasePtr<T>(p) {
@@ -352,10 +347,8 @@ public:
 	WeakPtr() : BasePtr<T>() {
 	}
 
-#ifdef USE_CXX11
 	WeakPtr(std::nullptr_t) : BasePtr<T>() {
 	}
-#endif
 
 	template<class T2>
 	explicit WeakPtr(T2 *p) : BasePtr<T>(p) {
diff --git a/common/scummsys.h b/common/scummsys.h
index 655daa1a882..bc2a20e1760 100644
--- a/common/scummsys.h
+++ b/common/scummsys.h
@@ -482,9 +482,9 @@ typedef uint32 uintptr;
 #endif
 
 //
-// std::nullptr_t when c++11 is enabled but this type is not available
+// std::nullptr_t when this type is not available
 //
-#if defined(USE_CXX11) && defined(NO_CXX11_NULLPTR_T)
+#if defined(NO_CXX11_NULLPTR_T)
 namespace std {
 	typedef decltype(nullptr) nullptr_t;
 }
diff --git a/common/str.cpp b/common/str.cpp
index b861426adff..67c4c88d0e7 100644
--- a/common/str.cpp
+++ b/common/str.cpp
@@ -172,11 +172,9 @@ bool String::contains(uint32 x) const {
 	return false;
 }
 
-#ifdef USE_CXX11
 bool String::contains(char32_t x) const {
 	return contains((uint32)x);
 }
-#endif
 
 #ifndef SCUMMVM_UTIL
 
diff --git a/common/str.h b/common/str.h
index 70d7f982f27..02ed4978fae 100644
--- a/common/str.h
+++ b/common/str.h
@@ -116,9 +116,7 @@ public:
 	bool contains(const char *x) const;
 	bool contains(char x) const;
 	bool contains(uint32 x) const;
-#ifdef USE_CXX11
 	bool contains(char32_t x) const;
-#endif
 
 	/**
 	 * Simple DOS-style pattern matching function (understands * and ? like used in DOS).
diff --git a/common/ustr.h b/common/ustr.h
index 50a8073516d..3f9cea7d654 100644
--- a/common/ustr.h
+++ b/common/ustr.h
@@ -52,11 +52,7 @@ class String;
  * The presence of \0 characters in the string will cause undefined
  * behavior in some operations.
  */
-#ifdef USE_CXX11
 typedef char32_t u32char_type_t;
-#else
-typedef uint32 u32char_type_t;
-#endif
 
 class U32String : public BaseString<u32char_type_t> {
 public:
@@ -71,11 +67,9 @@ public:
 	/** Construct a new string containing exactly @p len characters read from address @p str. */
 	U32String(const value_type *str, uint32 len) : BaseString<u32char_type_t>(str, len) {}
 
-#ifdef USE_CXX11
 	explicit U32String(const uint32 *str) : BaseString<u32char_type_t>((const value_type *) str) {}
 	U32String(const uint32 *str, uint32 len) : BaseString<u32char_type_t>((const value_type *) str, len) {}
 	U32String(const uint32 *beginP, const uint32 *endP) : BaseString<u32char_type_t>((const value_type *) beginP, (const value_type *) endP) {}
-#endif
 
 	/** Construct a new string containing the characters between @p beginP (including) and @p endP (excluding). */
 	U32String(const value_type *beginP, const value_type *endP) : BaseString<u32char_type_t>(beginP, endP) {}
diff --git a/test/common/array.h b/test/common/array.h
index d3828382053..56378c7beee 100644
--- a/test/common/array.h
+++ b/test/common/array.h
@@ -323,13 +323,11 @@ class ArrayTestSuite : public CxxTest::TestSuite
 	}
 
 	void test_array_constructor_list() {
-#ifdef USE_CXX11
 		Common::Array<int> array = {1, 42, 255};
 		TS_ASSERT_EQUALS(array.size(), 3U);
 		TS_ASSERT_EQUALS(array[0], 1);
 		TS_ASSERT_EQUALS(array[1], 42);
 		TS_ASSERT_EQUALS(array[2], 255);
-#endif
 	}
 
 	void test_array_constructor_count_copy_value() {