diff --git a/src/d_main.cpp b/src/d_main.cpp
index 874a5a6d0..e68a67dfe 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -1116,7 +1116,7 @@ static void D_AddFile(char **list, const char *file)
 	list[pnumwadfiles] = newfile;
 }
 
-static inline void D_CleanFile(char **list)
+static void D_CleanFile(char **list)
 {
 	size_t pnumwadfiles;
 	for (pnumwadfiles = 0; list[pnumwadfiles]; pnumwadfiles++)