diff --git a/dijkstra.m b/dijkstra.m
index f3d646b..52a050f 100644
--- a/dijkstra.m
+++ b/dijkstra.m
@@ -6,8 +6,11 @@
 % History
 % 2008-04-09: Initial coding
 
-if isstruct(A), rp=A.rp; ci=A.ci; ai=A.ai; check=0;
-else [rp ci ai]=sparse_to_csr(A); check=1;
+if isstruct(A), 
+    rp=A.rp; ci=A.ci; ai=A.ai; 
+    check=0;
+else
+    [rp ci ai]=sparse_to_csr(A); check=1;
 end
 if check && any(ai)<0, error('gaimc:dijkstra', ...
         'dijkstra''s algorithm cannot handle negative edge weights.'); end
diff --git a/mst_prim.m b/mst_prim.m
index 98b88d4..b24a940 100644
--- a/mst_prim.m
+++ b/mst_prim.m
@@ -15,8 +15,12 @@
 if ~exist('full','var') || isempty(full), full=0; end
 if ~exist('target','var') || isempty(full), u=1; end
 
-if isstruct(A), rp=A.rp; ci=A.ci; ai=A.ai; check=0;
-else [rp ci ai]=sparse_to_csr(A); check=1;
+if isstruct(A), 
+    rp=A.rp; ci=A.ci; ai=A.ai; 
+    check=0;
+else
+    [rp ci ai]=sparse_to_csr(A); 
+    check=1;
 end
 if check && any(ai)<0, error('gaimc:prim', ...
         'prim''s algorithm cannot handle negative edge weights.'); end