diff --git a/cockatrice/CMakeLists.txt b/cockatrice/CMakeLists.txt
index 3a0d3ea0..215f61fd 100644
--- a/cockatrice/CMakeLists.txt
+++ b/cockatrice/CMakeLists.txt
@@ -183,6 +183,7 @@ QT4_ADD_RESOURCES(cockatrice_RESOURCES_RCC ${cockatrice_RESOURCES})
 
 INCLUDE(${QT_USE_FILE})
 INCLUDE_DIRECTORIES(../common)
+INCLUDE_DIRECTORIES(${PROTOBUF_INCLUDE_DIR})
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}/../common)
 INCLUDE_DIRECTORIES(${QT_MOBILITY_INCLUDE_DIR})
 INCLUDE_DIRECTORIES(${QT_MOBILITY_MULTIMEDIAKIT_INCLUDE_DIR})
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 41de51fd..1b35a2e1 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -31,6 +31,7 @@ SET(common_HEADERS
 )
 
 FIND_PACKAGE(Qt4 REQUIRED)
+FIND_PACKAGE(Protobuf REQUIRED)
 
 set(CMAKE_BUILD_TYPE Release)
 
@@ -38,6 +39,7 @@ QT4_WRAP_CPP(common_HEADERS_MOC ${common_HEADERS})
 INCLUDE(${QT_USE_FILE})
 INCLUDE_DIRECTORIES(pb)
 INCLUDE_DIRECTORIES(sfmt)
+INCLUDE_DIRECTORIES(${PROTOBUF_INCLUDE_DIR})
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})
 
 add_subdirectory(pb)