1 files changed, 3 insertions, 2 deletions

diff --git a/ripser.cpp b/ripser.cpp
index 3d4eb29..41600b8 100644
--- a/ripser.cpp
+++ b/ripser.cpp
@@ -926,7 +926,8 @@ int main(int argc, char** argv) {
 
 			if (u != v) {
 #ifdef PRINT_PERSISTENCE_PAIRS
-				std::cout << " [0," << get_diameter(e) << ")" << std::endl;
+				if (get_diameter(e) > 0)
+					std::cout << " [0," << get_diameter(e) << ")" << std::endl;
 #endif
 				dset.link(u, v);
 			} else
@@ -954,4 +955,4 @@ int main(int argc, char** argv) {
 			assemble_columns_to_reduce(columns_to_reduce, pivot_column_index, comp, dim, n, threshold, binomial_coeff);
 		}
 	}
-}
\ No newline at end of file
+}