diff --git a/src/bin/debug/strace/strace.cpp b/src/bin/debug/strace/strace.cpp
index db09551021..b808f33a84 100644
--- a/src/bin/debug/strace/strace.cpp
+++ b/src/bin/debug/strace/strace.cpp
@@ -290,9 +290,9 @@ print_syscall(FILE *outputFile, debug_post_syscall &message,
 			// if the return type is status_t or ssize_t, print human-readable
 			// error codes
 			if (returnType->TypeName() == "status_t"
-					|| (returnType->TypeName() == "ssize_t"
+					|| ((returnType->TypeName() == "ssize_t"
 					 || returnType->TypeName() == "int")
-					&& message.return_value < 0) {
+					&& message.return_value < 0)) {
 				print_to_string(&string, &length, " %s", strerror(message.return_value));
 			}
 		}