diff --git a/xs/src/libslic3r/SLAPrint.cpp b/xs/src/libslic3r/SLAPrint.cpp
index c15c928a4..a4062c701 100644
--- a/xs/src/libslic3r/SLAPrint.cpp
+++ b/xs/src/libslic3r/SLAPrint.cpp
@@ -297,6 +297,8 @@ SLAPrint::write_svg(const std::string &outputfile) const
         fprintf(f,"\t</g>\n");
     }
     fprintf(f,"</svg>\n");
+    // Ensure that the output gets written.
+    fflush(f);
 }
 
 coordf_t