diff --git a/src/utils/config_loader.c b/src/utils/config_loader.c
index dd19983..2a5c857 100644
--- a/src/utils/config_loader.c
+++ b/src/utils/config_loader.c
@@ -77,8 +77,8 @@ parse_config(const char* path, AcMeshInfo* config)
     fclose(fp);
 }
 
-void
-update_config(AcMeshInfo* config)
+AcResult
+acUpdateConfig(AcMeshInfo* config)
 {
     config->int_params[AC_mx] = config->int_params[AC_nx] + STENCIL_ORDER;
     ///////////// PAD TEST
@@ -109,6 +109,8 @@ update_config(AcMeshInfo* config)
     config->int_params[AC_mxy]  = config->int_params[AC_mx] * config->int_params[AC_my];
     config->int_params[AC_nxy]  = config->int_params[AC_nx] * config->int_params[AC_ny];
     config->int_params[AC_nxyz] = config->int_params[AC_nxy] * config->int_params[AC_nz];
+
+    return AC_SUCCESS;
 }
 
 /**
@@ -126,7 +128,7 @@ acLoadConfig(const char* config_path, AcMeshInfo* config)
     memset(config, (uint8_t)0xFF, sizeof(*config));
 
     parse_config(config_path, config);
-    update_config(config);
+    acUpdateConfig(config);
 #if VERBOSE_PRINTING // Defined in astaroth.h
     printf("###############################################################\n");
     printf("Config dimensions recalculated:\n");
diff --git a/src/utils/config_loader.h b/src/utils/config_loader.h
index 1775705..e12f13a 100644
--- a/src/utils/config_loader.h
+++ b/src/utils/config_loader.h
@@ -32,6 +32,9 @@ extern "C" {
 /** Loads data from the config file */
 AcResult acLoadConfig(const char* config_path, AcMeshInfo* config);
 
+/** Updates the built-in parameters based on nx, ny and nz */
+AcResult acUpdateConfig(AcMeshInfo* config);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif
diff --git a/src/utils/verification.c b/src/utils/verification.c
index 0069d52..227b8de 100644
--- a/src/utils/verification.c
+++ b/src/utils/verification.c
@@ -128,13 +128,23 @@ print_error_to_file(const char* path, const int n, const Error error)
     fclose(file);
 }
 
+static bool
+is_acceptable(const Error error)
+{
+    // TODO FIXME
+    const AcReal range = error.maximum_magnitude - error.minimum_magnitude;
+    if (error.abs_error < range * AC_REAL_EPSILON)
+        return true;
+    else
+        return false;
+}
+
 static void
 print_error_to_screen(const Error error)
 {
-    const bool is_acceptable = true;
-
+    printf("WARNING: is_acceptable() not yet complete\n");
     printf("\t%-15s... ", vtxbuf_names[error.handle]);
-    if (is_acceptable) {
+    if (is_acceptable(error)) {
         printf(GRN "OK! " RESET);
     }
     else {