diff --git a/.drone.jsonnet b/.drone.jsonnet
index c4e8ea302..ec06d1de7 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -156,7 +156,7 @@ local static_build_deps='autoconf automake make qttools5-dev file libtool gperf
 
     // Macos builds:
     mac_builder('macOS (Static)', cmake_extra='-DBUILD_STATIC_DEPS=ON -DCMAKE_OSX_DEPLOYMENT_TARGET=10.14 -DARCH=core2 -DARCH_ID=amd64',
-                build_tests=false, extra_cmds=static_check_and_upload),
+                build_tests=false, extra_cmds=static_check_and_upload, lto=true),
     mac_builder('macOS (Release)', run_tests=true),
     mac_builder('macOS (Debug)', build_type='Debug', cmake_extra='-DBUILD_DEBUG_UTILS=ON'),
 ]
diff --git a/cmake/StaticBuild.cmake b/cmake/StaticBuild.cmake
index 61b5fc01c..a7c19e524 100644
--- a/cmake/StaticBuild.cmake
+++ b/cmake/StaticBuild.cmake
@@ -307,7 +307,7 @@ endif()
 
 set(boost_buildflags "cxxflags=-fPIC")
 if(APPLE)
-  set(boost_buildflags "cxxflags=\"-fPIC -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}\"" "cflags=-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+  set(boost_buildflags "cxxflags=-fPIC -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}" "cflags=-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
 endif()
 
 build_external(boost