diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index 82cf898..07d3f62 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -149,7 +149,7 @@ set (ICU_INCLUDE_DIR ${ICU_UC_INCLUDE_DIR})
 set (ICU_LIB ${ICU_UC_LIB})
 # If ICU regexp engine is used or if the geocoder is built, use icui18n as well.
 if (${USE_ICU_REGEXP} STREQUAL "ON" OR ${BUILD_GEOCODER} STREQUAL "ON")
-  find_required_library (ICU_I18N unicode/regex.h icui18n "ICU")
+  find_required_library (ICU_I18N unicode/regex.h icuin "ICU")
   check_library_version (PC_ICU_I18N icu-i18n>=4.4)
   list (APPEND ICU_INCLUDE_DIR ${ICU_I18N_INCLUDE_DIR})
   list (APPEND ICU_LIB ${ICU_I18N_LIB})