diff --git a/src/asm/output.cpp b/src/asm/output.cpp
index 01b17a3a6..0a6d783aa 100644
--- a/src/asm/output.cpp
+++ b/src/asm/output.cpp
@@ -322,7 +322,7 @@ void out_WriteObject() {
 	// Also write symbols that weren't written above
 	sym_ForEach(registerUnregisteredSymbol);
 
-	fprintf(file, RGBDS_OBJECT_VERSION_STRING);
+	fputs(RGBDS_OBJECT_VERSION_STRING, file);
 	putLong(RGBDS_OBJECT_REV, file);
 
 	putLong(objectSymbols.size(), file);
diff --git a/src/link/object.cpp b/src/link/object.cpp
index 26308354b..219624cf7 100644
--- a/src/link/object.cpp
+++ b/src/link/object.cpp
@@ -528,7 +528,7 @@ void obj_ReadFile(char const *fileName, unsigned int fileID) {
 	int matchedElems;
 
 	if (fscanf(file, RGBDS_OBJECT_VERSION_STRING "%n", &matchedElems) == 1
-	    && matchedElems != strlen(RGBDS_OBJECT_VERSION_STRING))
+	    && matchedElems != QUOTEDSTRLEN(RGBDS_OBJECT_VERSION_STRING))
 		errx("%s: Not a RGBDS object file", fileName);
 
 	verbosePrint("Reading object file %s\n", fileName);