diff --git a/rrdtool-1.4.3-double.diff b/rrdtool-1.4.3-double.diff
new file mode 100644
index 0000000..b63e224
--- /dev/null
+++ b/rrdtool-1.4.3-double.diff
@@ -0,0 +1,13 @@
+Index: rrdtool-1.4.3/src/rrd_format.h
+===================================================================
+--- rrdtool-1.4.3.orig/src/rrd_format.h
++++ rrdtool-1.4.3/src/rrd_format.h
+@@ -35,7 +35,7 @@
+ /* changed because microsecond precision requires another field */
+ #define RRD_VERSION   "0004"
+ #define RRD_VERSION3  "0003"
+-#define FLOAT_COOKIE  8.642135E130
++#define FLOAT_COOKIE  ((double) 8.642135E130)
+ 
+ typedef union unival {
+     unsigned long u_cnt;
diff --git a/rrdtool.changes b/rrdtool.changes
index 5b7875e..95125cd 100644
--- a/rrdtool.changes
+++ b/rrdtool.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Apr 16 19:41:43 CEST 2010 - anicka@suse.cz
+
+- fixed bnc#594981 (-double.diff)
+
 -------------------------------------------------------------------
 Tue Mar 30 18:16:24 CEST 2010 - anicka@suse.cz
 
diff --git a/rrdtool.spec b/rrdtool.spec
index 6ecc7d2..4b166ce 100644
--- a/rrdtool.spec
+++ b/rrdtool.spec
@@ -25,9 +25,10 @@ Group:          Productivity/Scientific/Math
 AutoReqProv:    on
 Requires:       perl = %{perl_version}
 Version:        1.4.3
-Release:        1
+Release:        2
 Source:         %{name}-%{version}.tar.bz2
 Source1:        cgilib-0.5.tar.bz2 
+Patch:          %{name}-%{version}-double.diff
 Url:            http://oss.oetiker.ch/rrdtool/
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Summary:        A tool for data logging and analysis
@@ -41,11 +42,12 @@ definable time period.
 
 %prep
 %setup -q -a1
+%patch -p1
 
 %build
 # first prepare cgilib
 cd cgilib*
-make CC=gcc CFLAGS="$RPM_OPT_FLAGS -fPIC -I."
+make CC=gcc CFLAGS="$RPM_OPT_FLAGS -fPIC -I. -fexcess-precision=fast"
 mkdir -p ../lb/include
 cp *.h ../lb/include
 mkdir -p ../lb/lib