diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -17,7 +17,4 @@
     message(FATAL_ERROR "Baloo requires extended attributes support in the operating system, but no headers have been found.")
 endif ()
 
-# Check whether malloc_trim(3) is supported.
-check_include_file("malloc.h" HAVE_MALLOC_H)
-check_symbol_exists(malloc_trim "malloc.h" HAVE_MALLOC_TRIM)
 endif ()
diff --git a/config.h.cmake b/config.h.cmake
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -1,7 +0,0 @@
-/* This file is generated from config.h.cmake. */
-
-/* Whether malloc.h exists. */
-#cmakedefine HAVE_MALLOC_H 1
-
-/* Whether malloc_trim(3) exists. */
-#cmakedefine HAVE_MALLOC_TRIM 1