diff --git a/tools/profiles/debug.json b/tools/profiles/debug.json
index 1aa2ee534c..4f8882b8ea 100644
--- a/tools/profiles/debug.json
+++ b/tools/profiles/debug.json
@@ -18,7 +18,7 @@
     "ARMC6": {
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-g", "-O1",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
-                   "-Wno-reserved-user-defined-literal",
+                   "-Wno-reserved-user-defined-literal", "-Wno-deprecated-register",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
                    "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)=",
                    "-fshort-enums", "-fshort-wchar", "-DMBED_DEBUG",
diff --git a/tools/profiles/develop.json b/tools/profiles/develop.json
index 2ccfa5b584..c0b9f3802b 100644
--- a/tools/profiles/develop.json
+++ b/tools/profiles/develop.json
@@ -17,7 +17,7 @@
     "ARMC6": {
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-Os",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
-                   "-Wno-reserved-user-defined-literal",
+                   "-Wno-reserved-user-defined-literal", "-Wno-deprecated-register",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
                    "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)=",
                    "-fshort-enums", "-fshort-wchar", "-DMBED_TRAP_ERRORS_ENABLED=1"],
diff --git a/tools/profiles/release.json b/tools/profiles/release.json
index e0c4a67a23..99bd09fdb3 100644
--- a/tools/profiles/release.json
+++ b/tools/profiles/release.json
@@ -17,7 +17,7 @@
     "ARMC6": {
         "common": ["-c", "--target=arm-arm-none-eabi", "-mthumb", "-Oz",
                    "-Wno-armcc-pragma-push-pop", "-Wno-armcc-pragma-anon-unions",
-                   "-Wno-reserved-user-defined-literal",
+                   "-Wno-reserved-user-defined-literal", "-Wno-deprecated-register",
                    "-DMULADDC_CANNOT_USE_R7", "-fdata-sections",
                    "-fno-exceptions", "-MMD", "-D_LIBCPP_EXTERN_TEMPLATE(...)=",
                    "-fshort-enums", "-fshort-wchar", "-DNDEBUG"],