diff --git a/src/hardware/r_opengl/r_opengl.c b/src/hardware/r_opengl/r_opengl.c
index acd09f614..75a92c2fb 100644
--- a/src/hardware/r_opengl/r_opengl.c
+++ b/src/hardware/r_opengl/r_opengl.c
@@ -180,7 +180,7 @@ FUNCPRINTF void GL_DBG_Printf(const char *format, ...)
 // GL_MSG_Warning   : Raises a warning.
 // -----------------+
 
-static void GL_MSG_Warning(const char *format, ...)
+FUNCPRINTF static void GL_MSG_Warning(const char *format, ...)
 {
 	char str[4096] = "";
 	va_list arglist;
@@ -203,7 +203,7 @@ static void GL_MSG_Warning(const char *format, ...)
 // GL_MSG_Error     : Raises an error.
 // -----------------+
 
-static void GL_MSG_Error(const char *format, ...)
+FUNCPRINTF static void GL_MSG_Error(const char *format, ...)
 {
 	char str[4096] = "";
 	va_list arglist;
diff --git a/src/netcode/http-mserv.c b/src/netcode/http-mserv.c
index 2b52380cf..b8c662a51 100644
--- a/src/netcode/http-mserv.c
+++ b/src/netcode/http-mserv.c
@@ -134,7 +134,7 @@ HMS_on_read (char *s, size_t _1, size_t n, void *userdata)
 	return n;
 }
 
-static struct HMS_buffer *
+FUNCDEBUG static struct HMS_buffer *
 HMS_connect (int proto, const char *format, ...)
 {
 	va_list ap;
diff --git a/src/r_translation.c b/src/r_translation.c
index 390545802..a53b30e9f 100644
--- a/src/r_translation.c
+++ b/src/r_translation.c
@@ -556,7 +556,7 @@ static boolean ParseDecimal(tokenizer_t *sc, double *out)
 	return M_StringToDecimal(tkn, out);
 }
 
-static struct PaletteRemapParseResult *ThrowError(const char *format, ...)
+FUNCPRINTF static struct PaletteRemapParseResult *ThrowError(const char *format, ...)
 {
 	const size_t err_size = 512 * sizeof(char);
 
@@ -792,7 +792,7 @@ static struct PaletteRemapParseResult *PaletteRemap_ParseTranslation(const char
 	return result;
 }
 
-static void PrintError(const char *name, const char *format, ...)
+FUNCDEBUG static void PrintError(const char *name, const char *format, ...)
 {
 	char error[256];