diff --git a/CMakeLists.txt b/CMakeLists.txt
index 262200c31..55be25578 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -335,9 +335,12 @@ if(WANT_PNG AND USE_ZLIB AND NOT USE_PNG)
 	set(PNG_STATIC ON CACHE BOOL "" FORCE)
 	set(PNG_SHARED OFF CACHE BOOL "" FORCE)
 	set(PNG_TESTS OFF CACHE BOOL "" FORCE)
+	set(CMAKE_C_FLAGS_RELEASE_OLD "${CMAKE_C_FLAGS_RELEASE}")
+	set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fno-lto")
 	add_subdirectory(${CMAKE_SOURCE_DIR}/src/third-party/libpng libpng)
 	set_property(TARGET png16_static PROPERTY INCLUDE_DIRECTORIES ${CMAKE_BINARY_DIR}/libpng;${CMAKE_SOURCE_DIR}/src/third-party/libpng;${ZLIB_INCLUDE_DIRS})
 	set(PNG_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/src/third-party/libpng ${CMAKE_BINARY_DIR}/libpng)
+	set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE_OLD}")
 	list(APPEND DEPENDENCY_LIB png16_static)
 	set(USE_PNG ON)
 endif()