diff --git a/scss/_images.scss b/scss/_images.scss
index 410a09e36479fcc6002e6655d54480d2cfd979d0..d17006df24f2b23cb2d7e85d0b39e9fa4b24ce81 100644
--- a/scss/_images.scss
+++ b/scss/_images.scss
@@ -47,6 +47,6 @@
 }
 
 .figure-caption {
-  font-size: 90%;
+  font-size: $figure-caption-font-size;
   color: $gray-light;
 }
diff --git a/scss/_variables.scss b/scss/_variables.scss
index c02af45f556ad933cf1bf984412004ac7a04da69..78719df068b3385ab419c244fc018aa4ee24529c 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -737,6 +737,11 @@ $thumbnail-border-radius:     $border-radius !default;
 $thumbnail-box-shadow:        0 1px 2px rgba(0,0,0,.075) !default;
 
 
+// Figures
+
+$figure-caption-font-size: 90% !default;
+
+
 // Breadcrumbs
 
 $breadcrumb-padding-y:          .75rem !default;