diff --git a/SConstruct b/SConstruct
index bc269b7f7..cd1d765be 100644
--- a/SConstruct
+++ b/SConstruct
@@ -204,12 +204,12 @@ if env['CC'] == 'gcc' or env['CC'] == 'llvm-gcc':
     defaults.debugCcFlags = '-g'
     defaults.noOptimizeCcFlags = '-O0 -fno-inline'
     defaults.optimizeCcFlags = '-O3 -DNDEBUG -finline-functions -Wno-inline'
-    defaults.warningFlags = '-Wall -Wno-deprecated-declarations'
+    defaults.warningFlags = '-Wall'
 
 elif env['CC'] == 'cl': # Visual Studio
     defaults.cxxFlags = '/EHsc'
     defaults.ccFlags = ' '.join(['/MD', '/nologo', '/Zc:wchar_t', '/Zc:forScope',
-                                 '/D_SCL_SECURE_NO_WARNINGS', '/D_CRT_SECURE_NO_WARNINGS', '/wd4996'])
+                                 '/D_SCL_SECURE_NO_WARNINGS', '/D_CRT_SECURE_NO_WARNINGS'])
     defaults.debugCcFlags = '/Zi /Fd${TARGET}.pdb'
     defaults.noOptimizeCcFlags = '/Od /Ob0'
     defaults.optimizeCcFlags = '/O2 /DNDEBUG'
@@ -226,7 +226,7 @@ elif env['CC'] == 'icc':
 
 elif env['CC'] == 'clang':
     defaults.cxxFlags = ''
-    defaults.ccFlags = '-fcolor-diagnostics -Wno-deprecated-declarations'
+    defaults.ccFlags = '-fcolor-diagnostics'
     defaults.debugCcFlags = '-g'
     defaults.noOptimizeCcFlags = '-O0'
     defaults.optimizeCcFlags = '-O3 -DNDEBUG'
@@ -235,9 +235,6 @@ elif env['CC'] == 'clang':
 else:
     print "WARNING: Unrecognized C compiler '%s'" % env['CC']
 
-# TODO: Once deprecated functions have been removed, remove the
-# compiler options: -Wno-deprecated-declarations and /wd4996
-
 if env['OS'] in ('Windows', 'Darwin'):
     defaults.threadFlags = ''
     defaults.singleLibrary = True
diff --git a/include/cantera/base/ct_defs.h b/include/cantera/base/ct_defs.h
index 7b80e3c25..4712530ad 100644
--- a/include/cantera/base/ct_defs.h
+++ b/include/cantera/base/ct_defs.h
@@ -24,16 +24,6 @@
 #include <map>
 #include <string>
 
-// Warn about deprecated functions at compile time
-#ifdef __GNUC__
-#define DEPRECATED(func) func __attribute__ ((deprecated))
-#elif defined(_MSC_VER)
-#define DEPRECATED(func) __declspec(deprecated) func
-#else
-#pragma message("WARNING: You need to implement DEPRECATED for this compiler")
-#define DEPRECATED(func) func
-#endif
-
 /**
  * Namespace for the Cantera kernel.
  */