diff --git a/identify/extensions.py b/identify/extensions.py
index adc5333..d8cd295 100644
--- a/identify/extensions.py
+++ b/identify/extensions.py
@@ -163,7 +163,6 @@
     'png': {'binary', 'image', 'png'},
     'po': {'text', 'pofile'},
     'pp': {'text', 'puppet'},
-    'ppm': {'binary', 'image', 'ppm'},
     'prisma': {'text', 'prisma'},
     'properties': {'text', 'java-properties'},
     'proto': {'text', 'proto'},
@@ -268,6 +267,7 @@
 }
 EXTENSIONS_NEED_BINARY_CHECK = {
     'plist': {'plist'},
+    'ppm': {'image', 'ppm'},
 }
 
 NAMES = {