diff --git a/xs/xsp/XS.xsp b/xs/xsp/XS.xsp
index c324396b2..1f6c8b610 100644
--- a/xs/xsp/XS.xsp
+++ b/xs/xsp/XS.xsp
@@ -16,18 +16,6 @@ VERSION()
         RETVAL = newSVpv(SLIC3R_VERSION, 0);
     OUTPUT: RETVAL
 
-SV*
-DEBUG_OUT_PATH_PREFIX()
-    CODE:
-        RETVAL = newSVpv(SLIC3R_DEBUG_OUT_PATH_PREFIX, 0);
-    OUTPUT: RETVAL
-
-SV*
-FORK_NAME()
-    CODE:
-        RETVAL = newSVpv(SLIC3R_FORK_NAME, 0);
-    OUTPUT: RETVAL
-
 void
 xspp_test_croak_hangs_on_strawberry()
     CODE:
@@ -36,4 +24,4 @@ xspp_test_croak_hangs_on_strawberry()
     	} catch (...) {
     		croak("xspp_test_croak_hangs_on_strawberry: exception catched\n");
     	}
-%}
\ No newline at end of file
+%}