diff --git a/Cabal/src/Distribution/Compat/Environment.hs b/Cabal/src/Distribution/Compat/Environment.hs
index ffe278bcc54..8cc9d582ad9 100644
--- a/Cabal/src/Distribution/Compat/Environment.hs
+++ b/Cabal/src/Distribution/Compat/Environment.hs
@@ -63,7 +63,7 @@ setEnv_ key value = withCWString key $ \k -> withCWString value $ \v -> do
 {- FOURMOLU_DISABLE -}
 # if defined(i386_HOST_ARCH)
 #  define WINDOWS_CCONV stdcall
-# elif defined(x86_64_HOST_ARCH)
+# elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH)
 #  define WINDOWS_CCONV ccall
 # else
 #  error Unknown mingw32 arch
diff --git a/cabal-install/src/Distribution/Client/Compat/ExecutablePath.hs b/cabal-install/src/Distribution/Client/Compat/ExecutablePath.hs
index e805c110d60..fa989a6bd0f 100644
--- a/cabal-install/src/Distribution/Client/Compat/ExecutablePath.hs
+++ b/cabal-install/src/Distribution/Client/Compat/ExecutablePath.hs
@@ -123,7 +123,7 @@ getExecutablePath = readSymbolicLink $ "/proc/self/exe"
 
 # if defined(i386_HOST_ARCH)
 #  define WINDOWS_CCONV stdcall
-# elif defined(x86_64_HOST_ARCH)
+# elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH)
 #  define WINDOWS_CCONV ccall
 # else
 #  error Unknown mingw32 arch