diff --git a/lib/carto/parser.js b/lib/carto/parser.js
index 0c7ed4b..0e1876c 100644
--- a/lib/carto/parser.js
+++ b/lib/carto/parser.js
@@ -273,11 +273,19 @@ carto.Parser = function Parser(env) {
                     }
                 }
                 if (level > 0) {
-                    // TODO: make invalid instead
-                    throw makeError({
-                        message: 'Missing closing `}`',
-                        index: i
-                    });
+                    if (inString) {
+                        // TODO: make invalid instead
+                        throw makeError({
+                            message: 'Missing closing ' + inString,
+                            index: i
+                        });
+                    } else {
+                        // TODO: make invalid instead
+                        throw makeError({
+                            message: 'Missing closing `}`',
+                            index: i
+                        });
+                    }
                 }
 
                 return chunks.map(function(c) { return c.join(''); });