diff --git a/selfhost/cmd/ww/main.ww b/selfhost/cmd/ww/main.ww
index a584c9ab..0a9238e7 100644
--- a/selfhost/cmd/ww/main.ww
+++ b/selfhost/cmd/ww/main.ww
@@ -2459,7 +2459,12 @@ fn buildonesepimpl(selfdir: *u8, src: *u8, entryisdir: i32,
 				    && result.code == 127) {
 					cerr("ww: execve failed\n");
 				};
-				cerr("ww: w6c failed\n");
+				if (g.pkg[pi].path[0u64] != 0u8) {
+					cerrpath("ww: w6c failed for ",
+					    g.pkg[pi].path, "\n");
+				} else {
+					cerr("ww: w6c failed for (root)\n");
+				};
 				g.pkg[pi].failed = true;
 				anyfailed = true;
 				oi += 1;
@@ -2481,7 +2486,12 @@ fn buildonesepimpl(selfdir: *u8, src: *u8, entryisdir: i32,
 				    && result.code == 127) {
 					cerr("ww: execve failed\n");
 				};
-				cerr("ww: w6a failed\n");
+				if (g.pkg[pi].path[0u64] != 0u8) {
+					cerrpath("ww: w6a failed for ",
+					    g.pkg[pi].path, "\n");
+				} else {
+					cerr("ww: w6a failed for (root)\n");
+				};
 				g.pkg[pi].failed = true;
 				anyfailed = true;
 				oi += 1;