diff --git a/package/git-crypt/git-crypt.mk b/package/git-crypt/git-crypt.mk
index d562522485..82671b037b 100644
--- a/package/git-crypt/git-crypt.mk
+++ b/package/git-crypt/git-crypt.mk
@@ -15,7 +15,8 @@ GIT_CRYPT_LIBS = `$(PKG_CONFIG_HOST_BINARY) --libs openssl`
 define GIT_CRYPT_BUILD_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) $(TARGET_CONFIGURE_OPTS) \
 		LDFLAGS="$(TARGET_LDFLAGS) $(GIT_CRYPT_LIBS)" \
-		CXXFLAGS="$(TARGET_CXXFLAGS) -std=c++11" PREFIX=/usr
+		CXXFLAGS="$(TARGET_CXXFLAGS) -std=c++11 -DOPENSSL_API_COMPAT=0x30000000L" \
+		PREFIX=/usr
 endef
 
 define GIT_CRYPT_INSTALL_TARGET_CMDS