diff --git a/src/main/java/net/fabricmc/tinyremapper/TinyUtils.java b/src/main/java/net/fabricmc/tinyremapper/TinyUtils.java
index efd894e5..d95e96ef 100644
--- a/src/main/java/net/fabricmc/tinyremapper/TinyUtils.java
+++ b/src/main/java/net/fabricmc/tinyremapper/TinyUtils.java
@@ -98,7 +98,7 @@ private static MappingVisitor createAdapter(String fromNs, String toNs, MappingA
 						new FlatAsRegularMappingVisitor(new MappingAdapter(out)),
 						toNs),
 				fromNs,
-				true);
+				false); // infers mappings for non-obfuscated names from the src ns
 	}
 
 	private static final class MappingAdapter implements FlatMappingVisitor {