diff --git a/xs/src/myinit.h b/xs/src/myinit.h
index 5d1c17a17..84175da96 100644
--- a/xs/src/myinit.h
+++ b/xs/src/myinit.h
@@ -20,39 +20,8 @@ namespace Slic3r {}
 using namespace Slic3r;
 
 /* Implementation of CONFESS("foo"): */
-#define CONFESS(...) \
-     confess_at(__FILE__, __LINE__, __func__, __VA_ARGS__)
-
-void
-do_confess(SV *error_sv)
-{
-     dSP;
-     ENTER;
-     SAVETMPS;
-     PUSHMARK(SP);
-     XPUSHs( sv_2mortal(error_sv) );
-     PUTBACK;
-     call_pv("Carp::confess", G_DISCARD);
-     FREETMPS;
-     LEAVE;
-}
-
-void
-confess_at(const char *file, int line, const char *func,
-            const char *pat, ...)
-{
-     va_list args;
-     SV *error_sv = newSVpvf("Error in function %s at %s:%d: ", func,
-         file, line);
-
-     va_start(args, pat);
-     sv_vcatpvf(error_sv, pat, &args);
-     va_end(args);
-
-     sv_catpvn(error_sv, "\n\t", 2);
-
-     do_confess(error_sv);
-}
-/* End implementation of CONFESS("foo") */
+#define CONFESS(...) confess_at(__FILE__, __LINE__, __func__, __VA_ARGS__)
+void confess_at(const char *file, int line, const char *func, const char *pat, ...);
+/* End implementation of CONFESS("foo"): */
 
 #endif
diff --git a/xs/src/utils.cpp b/xs/src/utils.cpp
new file mode 100644
index 000000000..7a3b11ade
--- /dev/null
+++ b/xs/src/utils.cpp
@@ -0,0 +1,26 @@
+#include <myinit.h>
+
+void
+confess_at(const char *file, int line, const char *func,
+            const char *pat, ...)
+{
+     va_list args;
+     SV *error_sv = newSVpvf("Error in function %s at %s:%d: ", func,
+         file, line);
+
+     va_start(args, pat);
+     sv_vcatpvf(error_sv, pat, &args);
+     va_end(args);
+
+     sv_catpvn(error_sv, "\n\t", 2);
+
+     dSP;
+     ENTER;
+     SAVETMPS;
+     PUSHMARK(SP);
+     XPUSHs( sv_2mortal(error_sv) );
+     PUTBACK;
+     call_pv("Carp::confess", G_DISCARD);
+     FREETMPS;
+     LEAVE;
+}