diff --git a/crypto/Makefile.am b/crypto/Makefile.am
index 7fea236..1acf0f4 100644
--- a/crypto/Makefile.am
+++ b/crypto/Makefile.am
@@ -233,6 +233,9 @@ else
 if HOST_LINUX
 libcrypto_la_SOURCES += arch/aarch64/crypto_cpu_caps_linux.c
 else
+if HOST_WIN
+libcrypto_la_SOURCES += arch/aarch64/crypto_cpu_caps_windows.c
+else
 if HOST_OPENBSD
 libcrypto_la_SOURCES += arch/aarch64/crypto_cpu_caps.c
 else
@@ -241,6 +244,7 @@ endif
 endif
 endif
 endif
+endif
 
 if HOST_X86_64
 libcrypto_la_SOURCES += arch/amd64/crypto_cpu_caps.c