diff --git a/terraform/hclgen/primitive_entry.go b/terraform/hclgen/primitive_entry.go
index 100536a2f..200906b21 100644
--- a/terraform/hclgen/primitive_entry.go
+++ b/terraform/hclgen/primitive_entry.go
@@ -30,7 +30,7 @@ import (
 	"github.com/zclconf/go-cty/cty"
 )
 
-var preventHeredoc = os.Getenv("DYNATRACE_HEREDOC") != "false"
+var preventHeredoc = os.Getenv("DYNATRACE_HEREDOC") == "false"
 
 type primitiveEntry struct {
 	Indent      string