diff --git a/include/asm/section.hpp b/include/asm/section.hpp
index 49f90d72..4a31ebb7 100644
--- a/include/asm/section.hpp
+++ b/include/asm/section.hpp
@@ -30,7 +30,7 @@ struct Section {
 	char *name;
 	enum SectionType type;
 	enum SectionModifier modifier;
-	struct FileStackNode *src; // Where the section was defined
+	struct FileStackNode const *src; // Where the section was defined
 	uint32_t fileLine; // Line where the section was defined
 	uint32_t size;
 	uint32_t org;
diff --git a/src/asm/fstack.cpp b/src/asm/fstack.cpp
index f05bfde7..8c1943b3 100644
--- a/src/asm/fstack.cpp
+++ b/src/asm/fstack.cpp
@@ -382,7 +382,7 @@ void fstk_RunMacro(char const *macroName, struct MacroArgs *args)
 		}
 	}
 	if (macro->src->type == NODE_REPT) {
-		std::vector<uint32_t> &srcIters = macro->src->iters();
+		std::vector<uint32_t> const &srcIters = macro->src->iters();
 
 		for (uint32_t i = srcIters.size(); i--; ) {
 			char buf[sizeof("::REPT~4294967295")]; // UINT32_MAX