diff --git a/runtime/Makefile b/runtime/Makefile
index c5993a81b2..96c882a04c 100644
--- a/runtime/Makefile
+++ b/runtime/Makefile
@@ -4,9 +4,11 @@ export
 .PHONY: all
 all: juvix_c juvix_rust
 
+# 2024-09-20: `-j` cannot be used in the juvix_c make invocation because it causes
+# an error in the 'Build Linux static binary workflow'.
 .PHONY: juvix_c
 juvix_c:
-	cd c && $(MAKE) -j 4 -s
+	cd c && $(MAKE) -s
 
 .PHONY: juvix_rust
 juvix_rust: