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-rw-r--r--src/crystfelsymmetryselector.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/crystfelsymmetryselector.c b/src/crystfelsymmetryselector.c
index e8b1d0d6..219e4da6 100644
--- a/src/crystfelsymmetryselector.c
+++ b/src/crystfelsymmetryselector.c
@@ -81,6 +81,8 @@ char *crystfel_symmetry_selector_get_group_symbol(CrystFELSymmetrySelector *sel)
int crystfel_symmetry_selector_set_group_symbol(CrystFELSymmetrySelector *sel,
const char *pg_symbol)
{
- gtk_entry_set_text(GTK_ENTRY(sel->entry), pg_symbol);
+ if ( pg_symbol != NULL ) {
+ gtk_entry_set_text(GTK_ENTRY(sel->entry), pg_symbol);
+ }
return 0;
}