diff --git a/CMakeLists.txt b/CMakeLists.txt
index 38216809..006602b9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,6 +9,12 @@ IF (NOT CMAKE_BUILD_TYPE)
     SET(CMAKE_BUILD_TYPE "Release")
 ENDIF (NOT CMAKE_BUILD_TYPE)
 
+IF (CMAKE_BUILD_TYPE MATCHES "Debug")
+    IF (CMAKE_COMPILER_IS_GNUCXX)
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter")
+    ENDIF (CMAKE_COMPILER_IS_GNUCXX)
+ENDIF (CMAKE_BUILD_TYPE MATCHES "Debug")
+
 # Where to build the library
 SET(LIBRARY_OUTPUT_PATH "lib")
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index ff69eb31..10db6fd1 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -4,6 +4,12 @@ cmake_minimum_required(VERSION 2.6)
 # Project configuration
 PROJECT(TESTS)
 
+IF (CMAKE_BUILD_TYPE MATCHES "Debug")
+    IF (CMAKE_COMPILER_IS_GNUCXX)
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter")
+    ENDIF (CMAKE_COMPILER_IS_GNUCXX)
+ENDIF (CMAKE_BUILD_TYPE MATCHES "Debug")
+
 # Headers
 INCLUDE_DIRECTORIES(${REACTPHYSICS3D_SOURCE_DIR}/test)
 
diff --git a/testbed/CMakeLists.txt b/testbed/CMakeLists.txt
index dd6faefc..12bbea84 100644
--- a/testbed/CMakeLists.txt
+++ b/testbed/CMakeLists.txt
@@ -4,6 +4,12 @@ cmake_minimum_required(VERSION 2.6)
 # Project configuration
 PROJECT(Testbed)
 
+IF (CMAKE_BUILD_TYPE MATCHES "Debug")
+    IF (CMAKE_COMPILER_IS_GNUCXX)
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter")
+    ENDIF (CMAKE_COMPILER_IS_GNUCXX)
+ENDIF (CMAKE_BUILD_TYPE MATCHES "Debug")
+
 # Where to build the executables
 SET(EXECUTABLE_OUTPUT_PATH "${OUR_EXECUTABLE_OUTPUT_PATH}/testbed")
 SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${EXECUTABLE_OUTPUT_PATH})