diff --git a/src/dcp.c b/src/dcp.c
index 61a11d7..ea545de 100644
--- a/src/dcp.c
+++ b/src/dcp.c
@@ -7,34 +7,27 @@
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#ifndef SYSCONFDIR
+#include "config.h"
+#endif
 
 bool
 find_calibration_by_model(char *conffile, char *model, const char *sensor)
 {
-        // Check config/%model,%sensor.dcp in the current working directory
-        sprintf(conffile, "config/%s,%s.dcp", model, sensor);
-        if (access(conffile, F_OK) != -1) {
-                printf("Found calibration file at %s\n", conffile);
-                return true;
+        static const char *paths[] = {
+                "config/%s,%s.dcp",
+                SYSCONFDIR "/megapixels/config/%s,%s.dcp",
+                DATADIR "/megapixels/config/%s,%s.dcp",
+                NULL
+        };
+        for (const char *fmt = paths[0]; fmt; fmt++) {
+                sprintf(conffile, fmt, model, sensor);
+                if (access(conffile, F_OK) != -1) {
+                        printf("Found calibration file at %s\n", conffile);
+                        return true;
+                }
         }
 
-        // Check user overridden /etc/megapixels/config/%model,%sensor.dcp
-        sprintf(conffile, "%s/megapixels/config/%s,%s.dcp", "/etc", model, sensor);
-        if (access(conffile, F_OK) != -1) {
-                printf("Found calibration file at %s\n", conffile);
-                return true;
-        }
-
-        // Check packaged /usr/share/megapixels/config/%model,%sensor.ini
-        sprintf(conffile,
-                "%s/megapixels/config/%s,%s.dcp",
-                "/usr/share",
-                model,
-                sensor);
-        if (access(conffile, F_OK) != -1) {
-                printf("Found calibration file at %s\n", conffile);
-                return true;
-        }
         printf("No calibration found for %s,%s\n", model, sensor);
         return false;
 }