diff --git a/cmake/build-pofiles.cmake b/cmake/build-pofiles.cmake
index d0991ad..b39be31 100644
--- a/cmake/build-pofiles.cmake
+++ b/cmake/build-pofiles.cmake
@@ -1,68 +1,69 @@
 # Copyright (c) 2017 Aleix Pol Gonzalez <aleixpol@kde.org>
 # Copyright (c) 2017 Harald Sitter <sitter@kde.org>
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 # 1. Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 # 2. Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the distribution.
 # 3. Neither the name of the University nor the names of its contributors
 #    may be used to endorse or promote products derived from this software
 #    without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 
 file(GLOB_RECURSE pofiles RELATIVE "${PO_DIR}" "${PO_DIR}/**.po")
 
 include(ProcessorCount)
 ProcessorCount(numberOfProcesses)
 
 set(i 0)
 set(commands)
 
 function(_processCommands)
     if(NOT commands)
         return()
     endif()
 
     execute_process(
         ${commands}
         RESULT_VARIABLE code
     )
     if(code)
         message(FATAL_ERROR "failed generating ${PO_DIR}")
     endif()
 endfunction()
 
 foreach(pofile IN LISTS pofiles)
     get_filename_component(name ${pofile} NAME)
     # Regex the basename, cmake only allows stripping the longest extension, we
     # need the shortest or we'll screw up "org.kde.plasma.kittens.po"
     # https://bugs.kde.org/show_bug.cgi?id=379116
     string(REGEX REPLACE "^(.+)(\\.[^.]+)$" "\\1" name ${name})
     get_filename_component(langdir ${pofile} DIRECTORY)
     set(dest ${COPY_TO}/${langdir}/LC_MESSAGES)
     file(MAKE_DIRECTORY ${dest})
 
     list(APPEND commands COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} -o ${dest}/${name}.mo ${PO_DIR}/${pofile})
     math(EXPR i "${i}+1")
     if(i EQUAL ${numberOfProcesses})
         _processCommands()
         set(i 0)
+        set(commands)
     endif()
 endforeach()
 
 _processCommands()