diff --git a/common/lib/share/mccode-r.h.in b/common/lib/share/mccode-r.h.in
index 68a145e19..da0c0e793 100644
--- a/common/lib/share/mccode-r.h.in
+++ b/common/lib/share/mccode-r.h.in
@@ -567,7 +567,9 @@ int _getcomp_index(char* compname);
      "POS: %g, %g, %g, %g, %g, %g, %g, %g, %g, %g, %g, %g\n", \
      name, c.x, c.y, c.z, t[0][0], t[0][1], t[0][2], \
      t[1][0], t[1][1], t[1][2], t[2][0], t[2][1], t[2][2]); \
-     printf("Component %30s AT (%g,%g,%g)\n", name, c.x, c.y, c.z); }
+     fflush(stdout);\
+     printf("Component %30s AT (%g,%g,%g)\n", name, c.x, c.y, c.z);\
+     fflush(stdout);}
 #define DEBUG_INSTR_END() if(!mcdotrace); else printf("INSTRUMENT END:\n");
 #define DEBUG_ENTER() if(!mcdotrace); else printf("ENTER:\n");
 #define DEBUG_COMP(c) if(!mcdotrace); else printf("COMP: \"%s\"\n", c);