diff --git a/libs/video/renderer/vulkan/Makefile.am b/libs/video/renderer/vulkan/Makefile.am
index e4102ec9d..b134d1f91 100644
--- a/libs/video/renderer/vulkan/Makefile.am
+++ b/libs/video/renderer/vulkan/Makefile.am
@@ -5,6 +5,7 @@ AM_CPPFLAGS= -I$(top_srcdir)/include -DVK_NO_PROTOTYPES
 
 vulkan_src = \
 	init.c \
+	util.c \
 	vulkan_draw.c \
 	vulkan_vid_common.c
 
@@ -21,5 +22,5 @@ SUFFICES=.frag .vert .fc .vc .slc .glsl
 
 libvulkan_la_SOURCES= $(vulkan_src)
 
-EXTRA_DIST = $(vulkan_src) $(shader_src) namehack.h
+EXTRA_DIST = $(vulkan_src) $(shader_src) namehack.h util.h
 CLEANFILES= *.vc *.fc *.slc
diff --git a/libs/video/renderer/vulkan/init.c b/libs/video/renderer/vulkan/init.c
index af3f21b4b..7b553d5f6 100644
--- a/libs/video/renderer/vulkan/init.c
+++ b/libs/video/renderer/vulkan/init.c
@@ -1,5 +1,5 @@
 /*
-	int.c
+	init.c
 
 	Copyright (C) 2019      Bill Currie <bill@taniwha.org>
 
@@ -45,6 +45,8 @@
 
 #include "vid_vulkan.h"
 
+#include "util.h"
+
 cvar_t *vulkan_use_validation;
 
 static uint32_t numLayers;
@@ -196,53 +198,6 @@ init_physdev (VulkanInstance_t *instance, VkPhysicalDevice dev, VulkanPhysDevice
 	}
 }
 
-static int
-count_strings (const char **str)
-{
-	int         count = 0;
-
-	if (str) {
-		while (*str++) {
-			count++;
-		}
-	}
-	return count;
-}
-
-static void
-merge_strings (const char **out, const char **in1, const char **in2)
-{
-	if (in1) {
-		while (*in1) {
-			*out++ = *in1++;
-		}
-	}
-	if (in2) {
-		while (*in2) {
-			*out++ = *in2++;
-		}
-	}
-}
-
-static void
-prune_strings (const char * const *reference, const char **strings,
-			   uint32_t *count)
-{
-	for (int i = *count; i-- > 0; ) {
-		const char *str = strings[i];
-		const char * const *ref;
-		for (ref = reference; *ref; ref++) {
-			if (!strcmp (*ref, str)) {
-				break;
-			}
-		}
-		if (!*ref) {
-			memmove (strings + i, strings + i + 1,
-					 (--(*count) - i) * sizeof (const char **));
-		}
-	}
-}
-
 static int message_severities =
 	VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT |
 	VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
diff --git a/libs/video/renderer/vulkan/util.c b/libs/video/renderer/vulkan/util.c
new file mode 100644
index 000000000..5603bbd5d
--- /dev/null
+++ b/libs/video/renderer/vulkan/util.c
@@ -0,0 +1,83 @@
+/*
+	util.c
+
+	Copyright (C) 2019      Bill Currie <bill@taniwha.org>
+
+	This program is free software; you can redistribute it and/or
+	modify it under the terms of the GNU General Public License
+	as published by the Free Software Foundation; either version 2
+	of the License, or (at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+	See the GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to:
+
+		Free Software Foundation, Inc.
+		59 Temple Place - Suite 330
+		Boston, MA  02111-1307, USA
+
+*/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#include "util.h"
+
+int
+count_strings (const char **str)
+{
+	int         count = 0;
+
+	if (str) {
+		while (*str++) {
+			count++;
+		}
+	}
+	return count;
+}
+
+void
+merge_strings (const char **out, const char **in1, const char **in2)
+{
+	if (in1) {
+		while (*in1) {
+			*out++ = *in1++;
+		}
+	}
+	if (in2) {
+		while (*in2) {
+			*out++ = *in2++;
+		}
+	}
+}
+
+void
+prune_strings (const char * const *reference, const char **strings,
+			   uint32_t *count)
+{
+	for (int i = *count; i-- > 0; ) {
+		const char *str = strings[i];
+		const char * const *ref;
+		for (ref = reference; *ref; ref++) {
+			if (!strcmp (*ref, str)) {
+				break;
+			}
+		}
+		if (!*ref) {
+			memmove (strings + i, strings + i + 1,
+					 (--(*count) - i) * sizeof (const char **));
+		}
+	}
+}
diff --git a/libs/video/renderer/vulkan/util.h b/libs/video/renderer/vulkan/util.h
new file mode 100644
index 000000000..8d1a967a3
--- /dev/null
+++ b/libs/video/renderer/vulkan/util.h
@@ -0,0 +1,9 @@
+#ifndef __util_h
+#define __util_h
+
+#include <stdint.h>
+int count_strings (const char **str);
+void merge_strings (const char **out, const char **in1, const char **in2);
+void prune_strings (const char * const *reference, const char **strings, uint32_t *count);
+
+#endif//__util_h