diff --git a/core/clang/arm.mk b/core/clang/arm.mk
index e66aa6c..4053bb2 100644
--- a/core/clang/arm.mk
+++ b/core/clang/arm.mk
@@ -29,8 +29,7 @@
   -fno-partial-inlining \
   -fno-strict-volatile-bitfields \
   -fno-tree-copy-prop \
-  -fno-tree-loop-optimize \
-  -Wa,--noexecstack
+  -fno-tree-loop-optimize
 
 define subst-clang-incompatible-arm-flags
   $(subst -march=armv5te,-march=armv5t,\
diff --git a/core/clang/arm64.mk b/core/clang/arm64.mk
index ab395b3..cad7321 100644
--- a/core/clang/arm64.mk
+++ b/core/clang/arm64.mk
@@ -13,8 +13,7 @@
   -frerun-cse-after-loop \
   -frename-registers \
   -fno-strict-volatile-bitfields \
-  -fno-align-jumps \
-  -Wa,--noexecstack
+  -fno-align-jumps
 
 # We don't have any arm64 flags to substitute yet.
 define subst-clang-incompatible-arm64-flags