diff --git a/src/db/VHelper.cxx b/src/db/VHelper.cxx
index de55c9a1d..210e1e5d8 100644
--- a/src/db/VHelper.cxx
+++ b/src/db/VHelper.cxx
@@ -23,6 +23,7 @@
 #include "song/Filter.hxx"
 
 #include <assert.h>
+#include <stdlib.h>
 #include <string.h>
 
 DatabaseVisitorHelper::DatabaseVisitorHelper(const DatabaseSelection &_selection,
diff --git a/src/decoder/plugins/AudiofileDecoderPlugin.cxx b/src/decoder/plugins/AudiofileDecoderPlugin.cxx
index 0a86162c8..8ebc68ca4 100644
--- a/src/decoder/plugins/AudiofileDecoderPlugin.cxx
+++ b/src/decoder/plugins/AudiofileDecoderPlugin.cxx
@@ -33,6 +33,7 @@
 
 #include <assert.h>
 #include <stdio.h>
+#include <stdlib.h>
 
 static constexpr Domain audiofile_domain("audiofile");