diff --git a/CHANGELOG.md b/CHANGELOG.md
index feb48a3e..2851f7ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -58,6 +58,12 @@
 ### Deprecated
 ### Removed
 ### Fixed
+
+* Crash when zooming in or out, with `dpi-aware=yes`, and the
+  monitor's DPI is 0 (this is true for, for example, nested Wayland
+  sessions, or in virtualized environments).
+
+
 ### Security
 ### Contributors
 
diff --git a/terminal.c b/terminal.c
index c027cfac..b684030e 100644
--- a/terminal.c
+++ b/terminal.c
@@ -878,10 +878,13 @@ get_font_dpi(const struct terminal *term)
             mon = &tll_front(term->wl->monitors);
     }
 
-    if (term_fractional_scaling(term))
-        return mon != NULL ? mon->dpi.physical : 96.;
-    else
-        return mon != NULL ? mon->dpi.scaled : 96.;
+    const float monitor_dpi = mon != NULL
+        ? term_fractional_scaling(term)
+            ? mon->dpi.physical
+            : mon->dpi.scaled
+        : 96.;
+
+    return monitor_dpi > 0. ? monitor_dpi : 96.;
 }
 
 static enum fcft_subpixel