diff --git a/Applications/KeyboardMapper/KeyboardMapperWidget.cpp b/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
index 252c425a72..d88fa98b0f 100644
--- a/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
+++ b/Applications/KeyboardMapper/KeyboardMapperWidget.cpp
@@ -32,9 +32,9 @@
 #include <LibGUI/MessageBox.h>
 #include <LibGUI/RadioButton.h>
 #include <LibKeyboard/CharacterMapFile.h>
-#include <ctype.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <string.h>
 
 KeyboardMapperWidget::KeyboardMapperWidget()
 {
diff --git a/Libraries/LibC/ctype.cpp b/Libraries/LibC/ctype.cpp
index f4d35d5e9b..3649afba31 100644
--- a/Libraries/LibC/ctype.cpp
+++ b/Libraries/LibC/ctype.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <ctype.h>
-#include <string.h>
 
 extern "C" {
 
diff --git a/Libraries/LibC/ctype.h b/Libraries/LibC/ctype.h
index f6a4d4be90..e49c7086d0 100644
--- a/Libraries/LibC/ctype.h
+++ b/Libraries/LibC/ctype.h
@@ -26,7 +26,6 @@
 
 #pragma once
 
-#include <string.h>
 #include <sys/cdefs.h>
 
 __BEGIN_DECLS
diff --git a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
index 60883cf35b..040e5b85c4 100644
--- a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
+++ b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
@@ -32,6 +32,7 @@
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #define PARSE_ASSERT(x)                                                   \
     if (!(x)) {                                                           \
diff --git a/Userland/useradd.cpp b/Userland/useradd.cpp
index 5ee9df57f8..137a012bf2 100644
--- a/Userland/useradd.cpp
+++ b/Userland/useradd.cpp
@@ -28,6 +28,7 @@
 #include <ctype.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>