diff --git a/CMakeLists.txt b/CMakeLists.txt
index 65a7f257..c554c5f0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,13 @@ SET(SIGNAL_PROTOCOL_C_VERSION_MINOR 3)
 SET(SIGNAL_PROTOCOL_C_VERSION_PATCH 1)
 SET(SIGNAL_PROTOCOL_C_VERSION ${SIGNAL_PROTOCOL_C_VERSION_MAJOR}.${SIGNAL_PROTOCOL_C_VERSION_MINOR}.${SIGNAL_PROTOCOL_C_VERSION_PATCH})
 
+# Use platform specific debug postfix
+if(WIN32)
+	set(CMAKE_DEBUG_POSTFIX "d")
+elseif(APPLE)
+	set(CMAKE_DEBUG_POSTFIX "_debug")
+endif()
+
 SET(LIB_SUFFIX "" CACHE STRING "Define suffix of directory name (32/64)")
 SET(LIB_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}" CACHE STRING "Directory where lib will install")
 SET(INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "The directory the headers are installed in")