diff --git a/alethzero/CMakeLists.txt b/alethzero/CMakeLists.txt
index 56ab82228..bda66ede2 100644
--- a/alethzero/CMakeLists.txt
+++ b/alethzero/CMakeLists.txt
@@ -42,7 +42,7 @@ eth_add_executable(${EXECUTABLE}
 
 add_dependencies(${EXECUTABLE} BuildInfo.h)
 
-if((WIN32)
+if(WIN32)
 	target_link_libraries(${EXECUTABLE} Iphlpapi)
 endif()
 target_link_libraries(${EXECUTABLE} Qt5::Core)
diff --git a/eth/CMakeLists.txt b/eth/CMakeLists.txt
index 416155687..7396c9ccb 100644
--- a/eth/CMakeLists.txt
+++ b/eth/CMakeLists.txt
@@ -19,7 +19,7 @@ add_executable(${EXECUTABLE} ${SRC_LIST} ${HEADERS})
 
 add_dependencies(${EXECUTABLE} BuildInfo.h)
 
-if((WIN32)
+if(WIN32)
 	target_link_libraries(${EXECUTABLE} Iphlpapi)
 endif()
 target_link_libraries(${EXECUTABLE} ${Boost_REGEX_LIBRARIES})
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index a3b3188a9..69a3d51e7 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -69,7 +69,7 @@ endforeach(file)
 file(GLOB HEADERS "*.h")
 add_executable(testeth ${SRC_LIST} ${HEADERS})
 
-if((WIN32)
+if(WIN32)
 	target_link_libraries(testeth Iphlpapi)
 endif()
 target_link_libraries(testeth ${Boost_UNIT_TEST_FRAMEWORK_LIBRARIES})