diff --git a/src/arm/unwind_i.h b/src/arm/unwind_i.h
index 61ab5452..9f6af2fe 100644
--- a/src/arm/unwind_i.h
+++ b/src/arm/unwind_i.h
@@ -25,7 +25,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-arm.h>
diff --git a/src/hppa/unwind_i.h b/src/hppa/unwind_i.h
index d3c11be8..0f566d06 100644
--- a/src/hppa/unwind_i.h
+++ b/src/hppa/unwind_i.h
@@ -26,7 +26,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-hppa.h>
diff --git a/src/ia64/unwind_i.h b/src/ia64/unwind_i.h
index 46439752..c8cc52d6 100644
--- a/src/ia64/unwind_i.h
+++ b/src/ia64/unwind_i.h
@@ -26,7 +26,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
+#include <string.h>
 #include <inttypes.h>
 
 #include <libunwind-ia64.h>
diff --git a/src/mips/unwind_i.h b/src/mips/unwind_i.h
index 216fb916..fc9ab0b4 100644
--- a/src/mips/unwind_i.h
+++ b/src/mips/unwind_i.h
@@ -25,7 +25,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-mips.h>
diff --git a/src/ppc32/unwind_i.h b/src/ppc32/unwind_i.h
index c3c3a57f..5f559bd8 100644
--- a/src/ppc32/unwind_i.h
+++ b/src/ppc32/unwind_i.h
@@ -28,7 +28,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-ppc32.h>
diff --git a/src/ppc64/unwind_i.h b/src/ppc64/unwind_i.h
index 056dc166..206423e5 100644
--- a/src/ppc64/unwind_i.h
+++ b/src/ppc64/unwind_i.h
@@ -28,7 +28,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-ppc64.h>
diff --git a/src/x86/unwind_i.h b/src/x86/unwind_i.h
index 6d1d5e9f..1db2e98d 100644
--- a/src/x86/unwind_i.h
+++ b/src/x86/unwind_i.h
@@ -26,7 +26,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-x86.h>
diff --git a/src/x86_64/unwind_i.h b/src/x86_64/unwind_i.h
index 1e55a766..0f1fc0bb 100644
--- a/src/x86_64/unwind_i.h
+++ b/src/x86_64/unwind_i.h
@@ -28,7 +28,6 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 #ifndef unwind_i_h
 #define unwind_i_h
 
-#include <memory.h>
 #include <stdint.h>
 
 #include <libunwind-x86_64.h>
diff --git a/tests/Gperf-simple.c b/tests/Gperf-simple.c
index 239ad26a..ab46008d 100644
--- a/tests/Gperf-simple.c
+++ b/tests/Gperf-simple.c
@@ -21,7 +21,7 @@ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 
-#include <memory.h>
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
diff --git a/tests/Gperf-trace.c b/tests/Gperf-trace.c
index 7baf466d..7e95e66d 100644
--- a/tests/Gperf-trace.c
+++ b/tests/Gperf-trace.c
@@ -21,7 +21,7 @@ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
 
-#include <memory.h>
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>