diff --git a/src/resourcefiles/file_7z.cpp b/src/resourcefiles/file_7z.cpp
index 8b1c23b67..5c9289242 100644
--- a/src/resourcefiles/file_7z.cpp
+++ b/src/resourcefiles/file_7z.cpp
@@ -351,6 +351,8 @@ FResourceFile *Check7Z(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new F7ZFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}
diff --git a/src/resourcefiles/file_grp.cpp b/src/resourcefiles/file_grp.cpp
index dc4c97812..63738d7e6 100644
--- a/src/resourcefiles/file_grp.cpp
+++ b/src/resourcefiles/file_grp.cpp
@@ -147,6 +147,8 @@ FResourceFile *CheckGRP(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new FGrpFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}
diff --git a/src/resourcefiles/file_pak.cpp b/src/resourcefiles/file_pak.cpp
index 099e8046c..9ea01767b 100644
--- a/src/resourcefiles/file_pak.cpp
+++ b/src/resourcefiles/file_pak.cpp
@@ -139,6 +139,8 @@ FResourceFile *CheckPak(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new FPakFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}
diff --git a/src/resourcefiles/file_rff.cpp b/src/resourcefiles/file_rff.cpp
index 2e6a3bc5a..682df985d 100644
--- a/src/resourcefiles/file_rff.cpp
+++ b/src/resourcefiles/file_rff.cpp
@@ -260,6 +260,8 @@ FResourceFile *CheckRFF(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new FRFFFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}
diff --git a/src/resourcefiles/file_wad.cpp b/src/resourcefiles/file_wad.cpp
index ea8cac15b..384290782 100644
--- a/src/resourcefiles/file_wad.cpp
+++ b/src/resourcefiles/file_wad.cpp
@@ -651,6 +651,8 @@ FResourceFile *CheckWad(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new FWadFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}
diff --git a/src/resourcefiles/file_zip.cpp b/src/resourcefiles/file_zip.cpp
index 101b51982..7ae0e90a5 100644
--- a/src/resourcefiles/file_zip.cpp
+++ b/src/resourcefiles/file_zip.cpp
@@ -423,6 +423,8 @@ FResourceFile *CheckZip(const char *filename, FileReader *file, bool quiet)
 		{
 			FResourceFile *rf = new FZipFile(filename, file);
 			if (rf->Open(quiet)) return rf;
+
+			rf->Reader = NULL; // to avoid destruction of reader
 			delete rf;
 		}
 	}