diff --git a/src/d_main.cpp b/src/d_main.cpp
index 9dcf480fb..87ed27e4c 100644
--- a/src/d_main.cpp
+++ b/src/d_main.cpp
@@ -30,7 +30,6 @@
 #endif
 
 #include <time.h>
-#include <string.h>
 
 #include "doomdef.h"
 #include "am_map.h"
diff --git a/src/doomtype.h b/src/doomtype.h
index 3326de4dc..7c5680439 100644
--- a/src/doomtype.h
+++ b/src/doomtype.h
@@ -147,11 +147,9 @@ int strlwr(char *n); // from dosstr.c
 #include <stddef.h> // for size_t
 
 #ifndef SRB2_HAVE_STRLCPY
-#ifndef __cplusplus
 size_t strlcat(char *dst, const char *src, size_t siz);
 size_t strlcpy(char *dst, const char *src, size_t siz);
 #endif
-#endif
 
 // Macro for use with char foo[FOOSIZE+1] type buffers.
 // Never use this with a buffer that is a "char *" or passed
diff --git a/src/m_misc.cpp b/src/m_misc.cpp
index 78cc19194..63859293f 100644
--- a/src/m_misc.cpp
+++ b/src/m_misc.cpp
@@ -28,7 +28,6 @@
 
 // Extended map support.
 #include <ctype.h>
-#include <string.h>
 
 #include "doomdef.h"
 #include "g_game.h"