diff --git a/blizzard.cpp b/blizzard.cpp
index 9dc48863..cbdf85a1 100644
--- a/blizzard.cpp
+++ b/blizzard.cpp
@@ -245,7 +245,7 @@ void drawArrowTraps() {
           }
         }
       }
-    catch(out_of_range) {}
+    catch(out_of_range&) {}
     }
   }
 
diff --git a/graph.cpp b/graph.cpp
index 9f70cae3..efc4cd50 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -5010,7 +5010,7 @@ void drawFlashes() {
     flashdata& f = flashes[k];
     transmatrix V;
     
-    if(f.spd) try { V = gmatrix.at(f.where); } catch(out_of_range) { 
+    if(f.spd) try { V = gmatrix.at(f.where); } catch(out_of_range&) { 
       f = flashes[size(flashes)-1];
       flashes.pop_back(); k--;
       continue; 
diff --git a/rug.cpp b/rug.cpp
index 5f4e5aba..3586359f 100644
--- a/rug.cpp
+++ b/rug.cpp
@@ -584,7 +584,7 @@ void buildRug() {
       else if(v > w && v > w2)
         addTriangle(v, w, w2);
       }
-    catch(out_of_range) {}
+    catch(out_of_range&) {}
     }
 
   Xprintf("vertices = %d triangles=  %d\n", size(points), size(triangles));
diff --git a/shmup.cpp b/shmup.cpp
index 4f2c9e4d..2a893fbc 100644
--- a/shmup.cpp
+++ b/shmup.cpp
@@ -1410,7 +1410,7 @@ void doTraps() {
         bullet->parenttype = moArrowTrap;
         additional.push_back(bullet);
         }
-      catch(out_of_range) {}
+      catch(out_of_range&) {}
       }
     else if(d == 3) {
       auto tl = traplimits(t.second);
diff --git a/textures.cpp b/textures.cpp
index af61ba0a..b14d88dc 100644
--- a/textures.cpp
+++ b/textures.cpp
@@ -385,7 +385,7 @@ bool texture_config::apply(cell *c, const transmatrix &V, int col) {
 
     return true;
     }
-  catch(out_of_range) {
+  catch(out_of_range&) {
     // printf("Ignoring tile #%d / %08x: not mapped\n", si.id, goldbergcode(c, si));
     return false;
     }
@@ -1371,7 +1371,7 @@ void actDrawPixel(cell *c, hyperpoint h, int col) {
         fillcircle(M2 * spin(2 * M_PI * i / c->type) * Mirror * h, col);
       }
     }
-  catch(out_of_range) {}
+  catch(out_of_range&) {}
   }
   
 void drawPixel(cell *c, hyperpoint h, int col) {
@@ -1396,10 +1396,10 @@ void drawPixel(hyperpoint h, int col) {
           goto again;
           }
         }
-      catch(out_of_range) {}
+      catch(out_of_range&) {}
     drawPixel(where, h, col);
     }
-  catch(out_of_range) {}
+  catch(out_of_range&) {}
   }
 
 void drawLine(hyperpoint h1, hyperpoint h2, int col, int steps) {
@@ -1452,7 +1452,7 @@ void texture_config::remap(eTextureState old_tstate, eTextureState old_tstate_ma
         mi2.tvertices = move(new_tvertices);
         // printf("%08x remapping %d vertices to %d vertices\n", si.id, size(mi.tvertices), size(mi2.tvertices));
         }
-      catch(out_of_range) { 
+      catch(out_of_range&) { 
         printf("Unexpected missing cell #%d/%d", si.id, oldid);
         addMessage(XLAT("Unexpected missing cell #%d/%d", its(si.id), its(oldid)));
         config.tstate_max = config.tstate = tsAdjusting;