diff --git a/cmake/Modules/Packages/COMPRESS.cmake b/cmake/Modules/Packages/COMPRESS.cmake
index 887dfb88a6..bdcf1aa3f8 100644
--- a/cmake/Modules/Packages/COMPRESS.cmake
+++ b/cmake/Modules/Packages/COMPRESS.cmake
@@ -1,10 +1,11 @@
 find_package(ZLIB REQUIRED)
 target_link_libraries(lammps PRIVATE ZLIB::ZLIB)
 
-find_package(PkgConfig REQUIRED)
-pkg_check_modules(Zstd IMPORTED_TARGET libzstd>=1.4)
-
-if(Zstd_FOUND)
+find_package(PkgConfig QUIET)
+if(PkgConfig_FOUND)
+  pkg_check_modules(Zstd IMPORTED_TARGET libzstd>=1.4)
+  if(Zstd_FOUND)
     target_compile_definitions(lammps PRIVATE -DLAMMPS_ZSTD)
     target_link_libraries(lammps PRIVATE PkgConfig::Zstd)
+  endif()
 endif()
diff --git a/src/Makefile b/src/Makefile
index eeccc19ae0..44cebcb20c 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -183,7 +183,6 @@ PACKMOST = \
 	orient \
 	peri \
 	plugin \
-	poems \
 	qeq \
 	reaction \
 	reaxff \