diff --git a/org/drawer.go b/org/drawer.go
index 239d524..fc8d936 100644
--- a/org/drawer.go
+++ b/org/drawer.go
@@ -16,7 +16,7 @@ type PropertyDrawer struct {
 
 var beginDrawerRegexp = regexp.MustCompile(`^(\s*):(\S+):\s*$`)
 var endDrawerRegexp = regexp.MustCompile(`^(\s*):END:\s*$`)
-var propertyRegexp = regexp.MustCompile(`^(\s*):(\S+):(\s+(.*)$|\s*$)`)
+var propertyRegexp = regexp.MustCompile(`^(\s*):(\S+):(\s+(.*)$|$)`)
 
 func lexDrawer(line string) (token, bool) {
 	if m := endDrawerRegexp.FindStringSubmatch(line); m != nil {
diff --git a/org/footnote.go b/org/footnote.go
index 7032a22..860e8bc 100644
--- a/org/footnote.go
+++ b/org/footnote.go
@@ -16,7 +16,7 @@ type FootnoteDefinition struct {
 	Inline   bool
 }
 
-var footnoteDefinitionRegexp = regexp.MustCompile(`^\[fn:([\w-]+)\](\s+(.+)|$)`)
+var footnoteDefinitionRegexp = regexp.MustCompile(`^\[fn:([\w-]+)\](\s+(.+)|\s*$)`)
 
 func lexFootnoteDefinition(line string) (token, bool) {
 	if m := footnoteDefinitionRegexp.FindStringSubmatch(line); m != nil {
diff --git a/org/keyword.go b/org/keyword.go
index 01b7c95..512f33d 100644
--- a/org/keyword.go
+++ b/org/keyword.go
@@ -30,7 +30,7 @@ type Include struct {
 	Resolve func() Node
 }
 
-var keywordRegexp = regexp.MustCompile(`^(\s*)#\+([^:]+):(\s+(.*)|(\s*)$)`)
+var keywordRegexp = regexp.MustCompile(`^(\s*)#\+([^:]+):(\s+(.*)|$)`)
 var commentRegexp = regexp.MustCompile(`^(\s*)#(.*)`)
 
 var includeFileRegexp = regexp.MustCompile(`(?i)^"([^"]+)" (src|example|export) (\w+)$`)
diff --git a/org/list.go b/org/list.go
index 63f89b4..82722d0 100644
--- a/org/list.go
+++ b/org/list.go
@@ -25,8 +25,8 @@ type DescriptiveListItem struct {
 	Details []Node
 }
 
-var unorderedListRegexp = regexp.MustCompile(`^(\s*)([+*-])(\s+(.*)|\s*$)`)
-var orderedListRegexp = regexp.MustCompile(`^(\s*)(([0-9]+|[a-zA-Z])[.)])(\s+(.*)|\s*$)`)
+var unorderedListRegexp = regexp.MustCompile(`^(\s*)([+*-])(\s+(.*)|$)`)
+var orderedListRegexp = regexp.MustCompile(`^(\s*)(([0-9]+|[a-zA-Z])[.)])(\s+(.*)|$)`)
 var descriptiveListItemRegexp = regexp.MustCompile(`\s::(\s|$)`)
 var listItemStatusRegexp = regexp.MustCompile(`\[( |X|-)\]\s`)