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-rw-r--r--libcrystfel/src/detgeom.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libcrystfel/src/detgeom.c b/libcrystfel/src/detgeom.c
index 122dcd87..58e52f01 100644
--- a/libcrystfel/src/detgeom.c
+++ b/libcrystfel/src/detgeom.c
@@ -65,6 +65,8 @@ void detgeom_free(struct detgeom *detgeom)
{
int i;
+ if ( detgeom == NULL ) return;
+
for ( i=0; i<detgeom->n_panels; i++ ) {
free(detgeom->panels[i].name);
}