diff --git a/xs/src/libslic3r/SLAPrint.cpp b/xs/src/libslic3r/SLAPrint.cpp
index a4062c701..c5b1452aa 100644
--- a/xs/src/libslic3r/SLAPrint.cpp
+++ b/xs/src/libslic3r/SLAPrint.cpp
@@ -299,6 +299,9 @@ SLAPrint::write_svg(const std::string &outputfile) const
     fprintf(f,"</svg>\n");
     // Ensure that the output gets written.
     fflush(f);
+
+    // Close the file.
+    fclose(f);
 }
 
 coordf_t