diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7fe42de5bf2..72f436e78ae 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2013-03-20  Tilo Schwarz  <tilo@tilo-schwarz.de>
+
+	PR libfortran/51825
+	* gfortran.dg/namelist_77.f90: New.
+	* gfortran.dg/namelist_78.f90: New.
+
 2013-03-20  Tilo Schwarz  <tilo@tilo-schwarz.de>
 
 	PR libfortran/48618
diff --git a/gcc/testsuite/gfortran.dg/namelist_77.f90 b/gcc/testsuite/gfortran.dg/namelist_77.f90
new file mode 100644
index 00000000000..5cbfe3aad65
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/namelist_77.f90
@@ -0,0 +1,49 @@
+! { dg-do run }
+!
+! PR libfortran/51825 - Fortran runtime error: Cannot match namelist object name
+! Test case derived from PR.
+
+module local_mod
+
+    type mytype1
+        integer :: int1
+    end type
+
+    type mytype2
+        integer :: n_x       
+        integer :: n_px        
+    end type
+
+    type beam_init_struct
+        character(16) :: chars(1) = ''                                  
+        type (mytype1) dummy
+        type (mytype2) grid(1)      
+    end type
+
+end module
+
+program error_namelist
+
+    use local_mod
+
+    implicit none
+
+    type (beam_init_struct) beam_init
+
+    namelist / error_params / beam_init
+
+    open (10, status='scratch')
+    write (10, '(a)') "&error_params"
+    write (10, '(a)') "  beam_init%chars(1)='JUNK'"
+    write (10, '(a)') "  beam_init%grid(1)%n_x=3"
+    write (10, '(a)') "  beam_init%grid(1)%n_px=2"
+    write (10, '(a)') "/"
+    rewind(10)
+    read(10, nml=error_params)
+    close (10)
+
+    if (beam_init%chars(1) /= 'JUNK') call abort
+    if (beam_init%grid(1)%n_x /= 3) call abort
+    if (beam_init%grid(1)%n_px /= 2) call abort
+
+end program
diff --git a/gcc/testsuite/gfortran.dg/namelist_78.f90 b/gcc/testsuite/gfortran.dg/namelist_78.f90
new file mode 100644
index 00000000000..d4e29ab8228
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/namelist_78.f90
@@ -0,0 +1,34 @@
+! { dg-do run }
+!
+! PR libfortran/51825
+! Test case regarding namelist problems with derived types
+
+program namelist
+
+    type d1
+        integer :: j = 0
+    end type d1
+
+    type d2
+        type(d1) k
+    end type d2
+
+    type d3
+        type(d2) d(2)
+    end type d3
+
+    type(d3) der
+    namelist /nmlst/ der
+
+    open (10, status='scratch')
+    write (10, '(a)') "&NMLST"
+    write (10, '(a)') " DER%D(1)%K%J = 1,"
+    write (10, '(a)') " DER%D(2)%K%J = 2,"
+    write (10, '(a)') "/"
+    rewind(10)
+    read(10, nml=nmlst)
+    close (10)
+
+    if (der%d(1)%k%j /= 1) call abort
+    if (der%d(2)%k%j /= 2) call abort
+end program namelist
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index 31d5b57ef91..877d2d0c959 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,11 @@
+2013-03-20  Tilo Schwarz  <tilo@tilo-schwarz.de>
+
+	PR libfortran/51825
+	* io/list_read.c (nml_read_obj): Don't end the component loop on a
+	nested derived type, but continue with the next loop iteration.
+	(nml_get_obj_data): Don't move the first_nl pointer further in the
+	list if a qualifier was found.
+
 2013-03-20  Tilo Schwarz  <tilo@tilo-schwarz.de>
 
 	PR libfortran/48618
diff --git a/libgfortran/io/list_read.c b/libgfortran/io/list_read.c
index 22125be1afe..aa7c8c0d2c1 100644
--- a/libgfortran/io/list_read.c
+++ b/libgfortran/io/list_read.c
@@ -2578,17 +2578,17 @@ nml_read_obj (st_parameter_dt *dtp, namelist_info * nl, index_type offset,
 	       since a single object can have multiple reads.  */
 	    dtp->u.p.expanded_read = 0;
 
-	    /* Now loop over the components. Update the component pointer
-	       with the return value from nml_write_obj.  This loop jumps
-	       past nested derived types by testing if the potential
-	       component name contains '%'.  */
+	    /* Now loop over the components.  */
 
 	    for (cmp = nl->next;
 		 cmp &&
-		   !strncmp (cmp->var_name, obj_name, obj_name_len) &&
-		   !strchr (cmp->var_name + obj_name_len, '%');
+		   !strncmp (cmp->var_name, obj_name, obj_name_len);
 		 cmp = cmp->next)
 	      {
+		/* Jump over nested derived type by testing if the potential
+		   component name contains '%'.  */
+		if (strchr (cmp->var_name + obj_name_len, '%'))
+		    continue;
 
 		if (!nml_read_obj (dtp, cmp, (index_type)(pdata - nl->mem_pos),
 				  pprev_nl, nml_err_msg, nml_err_msg_size,
@@ -2901,7 +2901,8 @@ get_name:
 	  goto nml_err_ret;
 	}
 
-      if (*pprev_nl == NULL || !component_flag)
+      /* Don't move first_nl further in the list if a qualifier was found.  */
+      if ((*pprev_nl == NULL && !qualifier_flag) || !component_flag)
 	first_nl = nl;
 
       root_nl = nl;