diff --git a/cmake/LibsystemdExternalProject.cmake b/cmake/LibsystemdExternalProject.cmake
index 70bcf6e..e720e88 100644
--- a/cmake/LibsystemdExternalProject.cmake
+++ b/cmake/LibsystemdExternalProject.cmake
@@ -1,5 +1,6 @@
 find_program(MESON meson)
 find_program(NINJA ninja)
+find_program(GPERF gperf)
 
 if((NOT MESON) OR (NOT NINJA))
     message(FATAL_ERROR "Meson and Ninja are required to build libsystemd")