diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ff14c8..7837d84 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -312,13 +312,21 @@ set(OPENSSL_BUILD_OUTPUT
     ${OPENSSL_SHARED_CRYPTO_LIBRARY}
     ${OPENSSL_SHARED_SSL_LIBRARY}
 )
-add_custom_command(
-    OUTPUT ${OPENSSL_BUILD_OUTPUT}
-    COMMAND ${OPENSSL_BUILD_COMMAND}
-    DEPENDS ${OPENSSL_SOURCES}
-    WORKING_DIRECTORY ${OpenSSL_BINARY_DIR}
-    VERBATIM
-)
+
+if (WIN32)
+    add_custom_command(
+        OUTPUT ${OPENSSL_BUILD_OUTPUT}
+        COMMAND ${OPENSSL_BUILD_COMMAND}
+        DEPENDS ${OPENSSL_SOURCES}
+        WORKING_DIRECTORY ${OpenSSL_BINARY_DIR}
+        VERBATIM)
+else()
+    add_custom_command(
+        OUTPUT ${OPENSSL_BUILD_OUTPUT}
+        COMMAND cd ${OpenSSL_BINARY_DIR} && ${OPENSSL_BUILD_COMMAND}
+        DEPENDS ${OPENSSL_SOURCES}
+        VERBATIM)
+endif()
 
 if(PROJECT_IS_TOP_LEVEL)
     add_custom_target(openssl-build ALL DEPENDS ${OPENSSL_BUILD_OUTPUT})