diff --git a/build_tools/debugflaghh.py b/build_tools/debugflaghh.py
index 2e861e2790..1a4a379204 100644
--- a/build_tools/debugflaghh.py
+++ b/build_tools/debugflaghh.py
@@ -82,7 +82,6 @@ code(
 namespace gem5
 {
 
-GEM5_DEPRECATED_NAMESPACE(Debug, debug);
 namespace debug
 {
 
diff --git a/src/base/debug.cc b/src/base/debug.cc
index aa4092afc1..73b52f311f 100644
--- a/src/base/debug.cc
+++ b/src/base/debug.cc
@@ -52,7 +52,6 @@
 namespace gem5
 {
 
-GEM5_DEPRECATED_NAMESPACE(Debug, debug);
 namespace debug
 {
 
diff --git a/src/base/debug.hh b/src/base/debug.hh
index f6b03ae2a7..3941e66022 100644
--- a/src/base/debug.hh
+++ b/src/base/debug.hh
@@ -53,7 +53,6 @@
 namespace gem5
 {
 
-GEM5_DEPRECATED_NAMESPACE(Debug, debug);
 namespace debug
 {