diff --git a/Makefile.in b/Makefile.in
index 417c8900d..f13213efb 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -45,7 +45,7 @@ bindir = @bindir@
 libdir = @libdir@
 # This is actually the directory where we install our own header files.
 # It is a little different from the generic includedir.
-includedir = @includedir@/verilog$(suffix)
+includedir = @includedir@/iverilog$(suffix)
 mandir = @mandir@
 
 libdir64 = @libdir64@
diff --git a/driver-vpi/main.c b/driver-vpi/main.c
index c4b503d4e..54b05c5b4 100644
--- a/driver-vpi/main.c
+++ b/driver-vpi/main.c
@@ -514,7 +514,7 @@ static void setup_ivl_environment()
 	assign(&gstr.pCFLAGS,IVERILOG_VPI_CFLAGS " -I");
 	append(&gstr.pCFLAGS,gstr.pIVL);
 	appendBackSlash(&gstr.pCFLAGS);
-	append(&gstr.pCFLAGS,"\\include\\\\verilog" IVERILOG_SUFFIX);
+	append(&gstr.pCFLAGS,"\\include\\\\iverilog" IVERILOG_SUFFIX);
 
 	  /* Build up the LDFLAGS option string */
 	assign(&gstr.pLDLIBS,"-L");
diff --git a/verilog.spec b/verilog.spec
index fa02b6bc8..593d23388 100644
--- a/verilog.spec
+++ b/verilog.spec
@@ -80,8 +80,8 @@ make prefix=$RPM_BUILD_ROOT/usr install
 %attr(-,root,root) /usr/lib/ivl-0.8/cadpli.vpl
 %attr(-,root,root) /usr/lib/libvpi-0.8.a
 %attr(-,root,root) /usr/lib/libveriuser-0.8.a
-%attr(-,root,root) /usr/include/verilog-0.0/ivl_target.h
-%attr(-,root,root) /usr/include/verilog-0.0/vpi_user.h
-%attr(-,root,root) /usr/include/verilog-0.0/acc_user.h
-%attr(-,root,root) /usr/include/verilog-0.0/veriuser.h
-%attr(-,root,root) /usr/include/verilog-0.0/_pli_types.h
+%attr(-,root,root) /usr/include/iverilog-0.0/ivl_target.h
+%attr(-,root,root) /usr/include/iverilog-0.0/vpi_user.h
+%attr(-,root,root) /usr/include/iverilog-0.0/acc_user.h
+%attr(-,root,root) /usr/include/iverilog-0.0/veriuser.h
+%attr(-,root,root) /usr/include/iverilog-0.0/_pli_types.h