diff --git a/clibs/chibrax/syscall.cc b/clibs/chibrax/syscall.cc
index 5b8ba3c..130916f 100644
--- a/clibs/chibrax/syscall.cc
+++ b/clibs/chibrax/syscall.cc
@@ -64,7 +64,7 @@ namespace syscallNode {
         }
 
         freeList(memoryToClean);
-        if(syscallReturnValue = -1) {
+        if(syscallReturnValue == -1) {
             returnjs(errno);
         }
     }