diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0c666d..558ba17 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,4 +25,5 @@ target_compile_options(
         -Ofast
         -g
         -DNDEBUG
+        -fPIE
 )
diff --git a/src/pdf.c b/src/pdf.c
index e9de907..85239d3 100644
--- a/src/pdf.c
+++ b/src/pdf.c
@@ -956,7 +956,7 @@ vAddFontsPDF(diagram_type *pDiag)
 		vFPprintf(pOutFile, "endobj\n");
 	}
 
-	/* The Resources */
+    /* The Resources */
 	vSetLocation(17);
 	vFPprintf(pOutFile, "17 0 obj\n");
 	vFPprintf(pOutFile, "<<\n");